Frequently one finds that sellers guess-timate the age of a piece to show the item in its most favorable light. Weekend collectors–in a post-brunch glow and accompanied by a charming companion–are all too ready to hear the best of an object that has attracted their attention. As we say on the Street: That’s what makes a trade. But my column is about investment in tangibles–not about entertainment. If you are investing in an object for resale, it is useful to have something more concrete than a distant memory of a hopeful conjecture an enthusiastic dealer made in passing. In , the US Patent Office opened for business. Makers of things great and small have seen fit over the years to obtain patents for their items or processes.
Vintage Cigarette Lighters
Outside hinge with 3 barrels: Many of the early hinges were replaced, as have been some later ones, so the hinge barrel count is not always absolutely accurate as it is possible a repair replacement has been made. The appearance wasn’t so great and there was a tendency to rust, so a black crackle paint was used on these lighters.
Singer has recently pulled some of their dating and identification information from their website. Here you can look up your serial number and find out when your Singer Sewing Machine was made as .
Terms of Art Patent Tip Knowing how to use the number to get an idea of a patents age is part of patent voodoo. It gives you a way to quickly know the age of the invention, the vintage of the prior art that supports it, and whether it is expired or not. Remember if a patent is expired you are free to use the invention it discloses.
When older patent numbers start reappearing in prior art it may indicate new interest in an innovation. For example, within the Clean Technology space there are new patents that reference electric motor inventions from the s US Patent , and wind patents that reference blade technology from the Guy Deutscher, University of Manchester My view is that people are creative animals and will figure out clever ways to use tools that the inventor never imagined.
Steve Jobs The difficulty of forming a clear conception of the subject is increased by the fact that while we have to deal with novel and strange facts, we have also to use old words in novel and inconsistent senses.
Online Elgin Serial Number Database
Thanks to the “date letter” any piece of British sterling silver can be exactly dated. Old Sheffield Plate and Electroplated silver are not subject to this practice and the regulation issued by the authorities had the main objective of preventing possible frauds by unscrupulous sellers of plated ware. The best-known initiative is the prohibition effective from c.
Elkington was forced to change its mark in of stamping plated wares with the “crown”, to avoid misunderstanding with the symbol identifying the Sheffield Assay Office.
To look for a patent of invention issued between and October , first find the reference number and year in the printed indexes, available at The National Archives, the British Library and in several reference libraries.
Guide Alfred Dunhill began to manufacture briar smoking pipes in ; the famous white spot first appeared on top of the hand-cut vulcanite mouthpiece in in order that the customer should know which part faced upwards. At about this same time a one year guarantee against defects was offered on the bowl of each pipe, and to insure against far older Dunhill pipes being replaced under this guarantee a simple dating code, showing the year of manufacture, was devised and stamped onto each pipe bowl.
This code is still in use today. Over the ensuing years great interest has arisen over the “mystique” of the Dunhill pipe in general and the dating code in particular. Pipe collectors, especially in America, pride themselves on having acquired Dunhill pipes in prime condition which were made in the ‘s, ‘s and ‘s. Some collectors strive to acquire only those Dunhill pipes made between when Dunhill stopped buying bowls turned in France in favor of those turned in London at the newly opened Dunhill bowl-turning facility and the year of Alfred Dunhill’s retirement.
Consequently, much confusion has arisen over the dating code because it has not been standardized over the years, and seemingly minor differences in the code can mean a difference of years, even decades, in the manufacture of the pipe. Adding to this is the fact that the firm has used a great many special stampings depending on what part of the world to which their pipes were destined, and that sometimes these stampings or codes were used for only three or four months duration.
Leading to even greater confusion is that many pipes were simply stamped incorrectly; at times one part or another of the code is not to be found on a given pipe. Taking all this into account it should not be surprising that the original and complete dating code list, in possession of the firm’s archivist at 30 Duke Street, is some twenty eight pages long. And even if this list was made available it would be of little use to any but the most expert because it can only be used in conjunction with the most precise knowledge of the Dunhill pipe as it has changed in appearance over the years.
But enough of the complications in dating Dunhill pipes. A hand-carved as opposed to machine-carved pipe of classic design.
Vintage Cigarette Lighters
Why use this guide? Printed copies of these specifications, where they exist, were created in the s following reforms to patent law. Where there were no specifications, the details of the grant recorded in the Patent Rolls were transcribed.
In general, patent numbers can give an indication but not a definitive date as to when a dispenser was produced. Left over stems can be used for years, being added to newer heads and likewise, older, left over heads can sometimes be placed on newer stems.
Then from to note overlap the next Gibson humbucker is known as the “T bucker” or “T top”. They are called this because of a “T” that is part of the molding on the front of the two pickup bobbins. These also had the decal with “Patent No 2, , ” still the patent number of Les Paul’s trapeze tailpiece. The only way to see the “T” is to remove the pickup cover. A small change in late patent pickups was white PVC bobbin wires instead of black black was used on pre humbuckers.
Also T buckers can use either slot or phillips head screws to hold the bobbins to the base plate.
Patent numbers of Dispensers
Case serial number The Online Database for the Elgin Watch Company can tell you a great deal of information about your watch, based on just the serial number off the movement. The “movement” is also sometimes called the “watch works”. Serial Number off the movement: The serial number must be off the movement of the watch where the gears are , not off the case. These two serial numbers are unrelated.
The United States patent number for each year is the first patent issued that calendar year. A patent date is when something was patented, not when it was actually made, many items were manufactured for many years after it the patent was granted.
What type of bottle is it? This entire website is essentially a “key” – albeit a complex one – to the dating and typing typology of historic bottles. In addition, this site also assists the user with these questions: What technology, techniques, or processes were used to manufacture the bottle? Where did the bottle come from, i. Where can I go for more information on historic bottles? Blow-pipe or “open” type pontil scar.
Even then the bottles discussed in depth are so primarily to illustrate the presented information and concepts. Hundreds of specific historic bottles are used as examples within the pages of this website to illustrate the concepts discussed; with luck you may find the specific bottle you have an interest in discussed though typically you will not.
This website is intended for This website will help you determine what to look for when identifying and dating historic bottles.
These appear on the face of the patent only after January 2, , but the codes may be used on all patents in some databases. To make things more complicated, the number after the letter is sometimes omitted. A1 – Published Patent Application – if application is published more than once, A2 for second, etc.
Year Patent # Year Patent # 1 – , – , – , – , – 1, , – , 1,
If your number is higher, but less than the number for the next year, then your item had it’s design registered during that year. In July the numbering sequence changed as indicated on the chart. The last number issued in July was and began again In August starting with number To give an example using the number above the chart, Rd means: Design of your item was registered during The Public Record office and the British Government tend to enforce these marks and registration numbers.
Companies located outside the UK who have reproduced items, and tried to use a facsimile of the marks or numbering system have been sued, and have had sanctions imposed against them.
Tips of Performing Japanese Patent Numbers Search
This posting explains about British patent numbers, both old and new. At present there are two kinds of numbers. At the end there may be a check digit preceded by a fullstop but this can be ignored. Zeroes are added if necessary so that there are five digits within the numerical sequence.
Search and read the full text of patents from around the world with Google Patents, and find prior art in our index of non-patent literature.
Effects[ edit ] A patent does not give a right to make or use or sell an invention. From an economic and practical standpoint however, a patent is better and perhaps more precisely regarded as conferring upon its proprietor “a right to try to exclude by asserting the patent in court”, for many granted patents turn out to be invalid once their proprietors attempt to assert them in court. Like any other property right, it may be sold, licensed, mortgaged , assigned or transferred, given away, or simply abandoned.
A patent, being an exclusionary right, does not necessarily give the patent owner the right to exploit the invention subject to the patent. For example, many inventions are improvements of prior inventions that may still be covered by someone else’s patent. Some countries have “working provisions” that require the invention be exploited in the jurisdiction it covers.
Consequences of not working an invention vary from one country to another, ranging from revocation of the patent rights to the awarding of a compulsory license awarded by the courts to a party wishing to exploit a patented invention. The patentee has the opportunity to challenge the revocation or license, but is usually required to provide evidence that the reasonable requirements of the public have been met by the working of invention.
Challenges[ edit ] In most jurisdictions, there are ways for third parties to challenge the validity of an allowed or issued patent at the national patent office; these are called opposition proceedings.
Examples of Patents
The company also manufactures and sells electronic devices, including its Kindle e-Readers, Fire tablets and Fire phones. The company also provides services to developers and enterprises through Amazon Web Services, which offers computing, storage, database, analytics and deployment services. Methods, systems, and computer-readable media for management of virtual desktop instance pools are disclosed. A plurality of virtual desktop instances are provisioned in a pool for a client organization.
Patent Buddy offers a free search of patents, inventors and current patent owners. You can also search for patent attorneys & agents. Sign up Today!
It has come to my attention that some oddly colored Nov 30th type jars shades of red and yellow, probably other colors exist have recently surfaced for sale on auction sites. They have the base mold number: They were likely recent imports from Asia!!! If anyone has further info on this type of jar, or knows of other mold numbers that ID fakes, please contact me! These are also recently-made imports from Asia. His improvement revolutionized home canning in the United States. There is no absolute proof of that, however.
Another firm which was producing the jars early on was the Consolidated Fruit Jar Company, perhaps making them as early as or Questions remain on exactly which companies made these jars during the early years, since the patent evidently lasted 13 years or 20 years, counting a patent reissue , and ostensibly during that time period no one was allowed to produce the jars because of patent infringement issues unless they were granted permission by Mason, or the licensed holder of the patent.
In any case, throughout the next odd years, production of jars with the Nov. The s and s likely saw the peak of popularity of these jars. A considerable percentage have a mold number or letter on the base, a means of identifying the particular mold in use at the factory.