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www.uspto.gov/web/offices/ac/ido/oeip/taf/issuyear.htm

Feb 18, 2016 ... USPTO Patent links. ... Table of Issue Years and Patent Numbers, ... document number issued in each year for selected patent document types (utility, design, .... Prior to that date, an estimated 9,957 patents had been issued.

www.ebay.com/gds/Dating-an-Item-by-its-Patent-Number-/10000000003577309/g.html

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 ...

community.pressenter.net/~richard/patent.htm

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

www.biddingtons.com/content/investingpatent.html

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.

www.google.com/advanced_patent_search

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

www.oldstuffonly.com/patent_dates.asp

For example, if you find something with a patent number of 1,941,448 on it, you will find in the chart below that it was patented in 1933. Production of the item ...

robinsonsantiques.com/patent.htm

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 ...

www.phoenixmasonry.org/patent_search.htm

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 ...

www.myclassicjewelry.com/blog/vintage-jewelry-patents

Sep 5, 2014 ... Vintage jewelry patents can help identify and date your vintage jewelry. ... Because they are images, you need to have the patent number to ...