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DATAMP Patents by Date for April 1987
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
74,655,655----[datamp][all]
144,656,898----[datamp][all]
214,658,678----[datamp][all]
284,660,449----[datamp][all]