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DATAMP Patents by Date for November 1939
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
72,178,541-D117,460--[datamp][all]
142,179,581----[datamp][all]
212,180,899----[datamp][all]
282,181,764-D117,777--[datamp][all]