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DATAMP Patents by Date for January 1920
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
61,327,007----[datamp][all]
131,327,627RE14,791---[datamp][all]
201,328,366----[datamp][all]
271,328,857RE14,794---[datamp][all]