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DATAMP Patents by Date for April 1870
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
5101,436----[datamp][all]
12101,701RE3,918---[datamp][all]
19101,975RE3,925---[datamp][all]
26102,218RE3,939D3,994--[datamp][all]