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DATAMP Patents by Date for March 1929
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
51,703,933----[datamp][all]
121,705,231----[datamp][all]
191,705,470----[datamp][all]
261,706,460----[datamp][all]