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DATAMP Patents by Date for April 1865
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
447,079----[datamp][all]
1147,187----[datamp][all]
1847,328----[datamp][all]
2547,404RE1,942---[datamp][all]