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DATAMP Patents by Date for April 1957
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
22,787,054----[datamp][all]
92,787,796----[datamp][all]
162,788,675----[datamp][all]
232,789,314----[datamp][all]
302,790,280-D180,181--[datamp][all]