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DATAMP Patents by Date for April 1880
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
6226,149----[datamp][all]
13226,381RE9,146---[datamp][all]
20226,590RE9,164---[datamp][all]
27226,836-D11,752--[datamp][all]