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DATAMP Patents by Date for April 1970
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
73,504,413----[datamp][all]
143,505,711----[datamp][all]
213,507,212----[datamp][all]
283,508,536----[datamp][all]