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DATAMP Patents by Date for April 1934
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
31,953,133-D91,863--[datamp][all]
101,954,155----[datamp][all]
171,954,820----[datamp][all]
241,955,775----[datamp][all]