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DATAMP Patents by Date for September 1921
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
61,389,581----[datamp][all]
131,390,371----[datamp][all]
201,391,016----[datamp][all]
271,391,913----[datamp][all]