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DATAMP Patents by Date for October 1921
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
41,392,313----[datamp][all]
111,392,990-D59,325--[datamp][all]
181,393,777-D59,417--[datamp][all]
251,394,535-D59,506--[datamp][all]