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DATAMP Patents by Date for March 1920
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
21,332,364----[datamp][all]
91,332,919-D54,673--[datamp][all]
161,333,743----[datamp][all]
231,334,305----[datamp][all]
301,334,999----[datamp][all]