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DATAMP Patents by Date for April 1889
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
2400,458----[datamp][all]
9400,906----[datamp][all]
16401,326----[datamp][all]
23401,756-D19,056--[datamp][all]
30402,132----[datamp][all]