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DATAMP Patents by Date for December 1939
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
52,182,228----[datamp][all]
122,182,922----[datamp][all]
192,183,543----[datamp][all]
262,184,332----[datamp][all]