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DATAMP Patents by Date for September 1931
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
11,821,113----[datamp][all]
81,822,070----[datamp][all]
151,823,241----[datamp][all]
221,824,700----[datamp][all]
291,824,944----[datamp][all]