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DATAMP Patents by Date for July 1920
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
61,345,370-D55,591--[datamp][all]
131,346,204----[datamp][all]
201,346,812----[datamp][all]
271,347,623----[datamp][all]