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DATAMP Patents by Date for October 1920
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
51,354,651----[datamp][all]
121,355,137----[datamp][all]
191,356,033----[datamp][all]
261,356,673----[datamp][all]