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DATAMP Patents by Date for December 1931
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
11,833,980-D85,664--[datamp][all]
81,834,962----[datamp][all]
151,836,188----[datamp][all]
221,837,341-D85,817--[datamp][all]
291,838,119----[datamp][all]