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DATAMP Patents by Date for April 1937
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
62,076,511-D103,977--[datamp][all]
132,076,830----[datamp][all]
202,077,408----[datamp][all]
272,078,475----[datamp][all]