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DATAMP Patents by Date for November 1920
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
21,357,323----[datamp][all]
91,358,037----[datamp][all]
161,358,728----[datamp][all]
231,359,562-D56,669--[datamp][all]
301,360,482----[datamp][all]