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ISSUE DATES AND PATENT NUMBERS SINCE 1836: BY YEAR -- 1836 TO 2001 BY ISSUE DATE -- 1963 - 12/1994 (With addendum for issue dates from 1995 - 2001) April 2002
Some patent numbers, as displayed in the table, are 7 characters with the numeric portion padded with leading zeroes. Some numbers within a series may be unused.
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.
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 chart ...
Dating Americ an Clocks by Their Patent Numbers. Parts found in many American clocks may be marked with one or more United States patent numbers.
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.
Finding British patents. Are you searching for a patent registered in Great Britain ? Do you know? number of patent; date of patent; name of inventor
This posting explains about British patent numbers, both old and new. At present there are two kinds of numbers. The first “application number” is allocated when ...
Search UK patents. Search for published patent applications and registered patents using the Intellectual Property Office’s: patent information and document service ...
Find early British patents ... From October 1852 onwards British patents covered the whole of the United Kingdom and were printed ... If you have a patent number ...
Dating English Registry Marks. Starting in 1842, England has offered registration of it's decorative designs for pottery, china, wood, paper, pottery, china ...
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 ...
Use this table of patent numbers to date your collectibles. Digger Odell Publications books about bottles, bottle digging and bottle collecting.
U.S. Patent Dating Chart. For patents on mechanical operation. Use this list to date what year an item was patented. A Link to English Registry Marks and other links ...

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