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DATAMP Patents by Date for March 1931
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
31,794,361----[datamp][all]
101,795,313----[datamp][all]
171,796,369----[datamp][all]
241,797,279-D83,743--[datamp][all]
311,798,194----[datamp][all]