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DATAMP Patents by Date for September 1919
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
21,314,718----[datamp][all]
91,315,275----[datamp][all]
161,316,004----[datamp][all]
231,316,555----[datamp][all]
301,317,320----[datamp][all]