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DATAMP Patents by Date for April 1887
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
5360,426----[datamp][all]
12360,848-D17,256--[datamp][all]
19361,258----[datamp][all]
26361,669----[datamp][all]