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DATAMP Patents by Date for April 1943
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
62,315,778----[datamp][all]
132,316,168----[datamp][all]
202,316,777----[datamp][all]
272,317,461-D135,574--[datamp][all]