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DATAMP Patents by Date for April 1923
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
31,450,220----[datamp][all]
101,451,032----[datamp][all]
171,451,736----[datamp][all]
241,452,940----[datamp][all]