Patents Online - US Patent Number Ranges (1836

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Patents - US Patent Number Ranges (1836 - 1998)

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Year: US Patent Number Ranges:

NOTE:
The current patent numbering system began with a patent issued on July 13, 1836. Prior to that date, 9,957 patents had been issued. The user should note that the data in this page must be checked at Issue Dates and Patent Numbers Since 1836.

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