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DATAMP Patents by Date for April 1927
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
51,623,290----[datamp][all]
121,624,211----[datamp][all]
191,624,954----[datamp][all]
261,625,800----[datamp][all]