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DATAMP Patents by Date for April 1975
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
13,874,810----[datamp][all]
153,877,146----[datamp][all]
223,879,096----[datamp][all]
293,879,996----[datamp][all]