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DATAMP Patents by Date for April 1957
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
22,787,054----[datamp][all]
92,788,035----[datamp][all]
162,788,690----[datamp][all]
232,789,429----[datamp][all]