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DATAMP Patents by Date for September 1939
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
52,171,589----[datamp][all]
122,172,823----[datamp][all]
192,173,215-D116,745--[datamp][all]
262,174,083----[datamp][all]