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DATAMP Patents by Date for November 1919
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
41,320,468-D54,127--[datamp][all]
111,321,187-D54,162--[datamp][all]
181,322,086----[datamp][all]
251,322,543----[datamp][all]