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DATAMP Patents by Date for December 1919
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
21,323,267----[datamp][all]
91,324,269-D54,235--[datamp][all]
161,324,887----[datamp][all]
231,326,138----[datamp][all]
301,326,172----[datamp][all]