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

Feb 18, 2016 ... The current patent numbering system began with a patent issued on July 13, 1836. Prior to that date, an estimated 9,957 patents had been ...

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.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 ...

www.bpmlegal.com/howtopat1.html

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.

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 ...

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 ...

learn.articleonepartners.com/patent-dates

Each patent has a number of dates that can impact a patent's role in a Study. ... in the USPTO Gazette 18 months from the filing date of the patent application.

www.mugwumps.com/patents.html

If you have ever had trouble dating old instruments, this list may be a help. It shows the first patent number issued in each year, so if you have a patent number, ...

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 ...