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DATAMP Patents by Date for April 1859
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
523,445----[datamp][all]
1223,550----[datamp][all]
1923,655----[datamp][all]
2623,751----[datamp][all]