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DATAMP Patents by Date for April 1860
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
327,677----[datamp][all]
1027,771----[datamp][all]
1727,879RE945---[datamp][all]
2427,960RE949---[datamp][all]