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DATAMP Patents by Date for April 1861
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
231,877----[datamp][all]
931,971----[datamp][all]
1632,041RE1,173---[datamp][all]
2332,120----[datamp][all]
3032,179----[datamp][all]