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Term of patent in the United States


In the United States, under current patent law, the term of patent, provided that maintenance ... 1995 and for patents that were still in force on June 8, 1995, the patent term is either 17 years fr...

Issue Years and Patent Numbers


Feb 18, 2016 ... Prior to that date, an estimated 9,957 patents had been issued. ... titled Issue Dates and Patent Numbers Since 1836, which contains first patent ...

U. S. Patent Dates - Old Stuff Only


These dates are a handy reference that you may find useful for figuring out when an item was first produced. For example, if you find something with a patent ...

U. S. Patent Date List : Robinsons Antiques


U.S. patent date chart. this chart will help you find the year an item was patented if you know the patent number, also design patents. Brought to you by ...

Biddington's: US Patent Numbers Chart for Dating Antiques and ...


Biddington's provides a list of US patent numbers cross-referenced with the dates they were issued to help in determining the age of antiques & collectibles.

How to do a search on a U.S. Patent - Phoenixmasonry


If you have the number of a U.S. patent and would like to see the patent ... If you only have a pre-1976 patent date, you also may be able to find the patent if you ...

Brown & Michaels - How to read a patent front page


See section (22) for the number and issue date of that patent. The Reissue Patent has been examined and issued again with modifications to the claims.

How to Use Patent Numbers to Date Antiques and Collectibles


Biddington's provides a list of patent numbers cross-referenced with the dates they were issued to help in determining the age of antiques and collectibles.

Advanced Patent Search - Google


Advanced Patent Search, About Google ... Patent number, Return patents with the patent number. Title, Return patents with ... Restrict by filing date. Restrict by ...

Patents - Mid-West Tool Collectors Association


Datamp stands for Directory of American Tool and Machinery Patents. Patents are searchable there by inventor, manufacturer, issue date- include a partial date,  ...

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Patent/Date Chart


US Patent No./Date Reference Table. Year Patent # Year Patent # -------------------- ----- ----------------------------- 1836 1 - 109 1900 640,167 - 664,826 1837 110 ...

Dating an Item by its Patent Number | eBay


The purpose of this guide is to help people date items that they think are old. If you have a patent number on an item, you can approximately date it using the ...

Patent Issue Dates - DATAMP


DATAMP Patents by Year. This table shows the number of the first patent in the DATAMP database for each year, broken down by patent type.