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DATAMP Patents by Date for April 1955
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
52,705,441----[datamp][all]
122,705,899----[datamp][all]
192,706,327----[datamp][all]
262,706,872----[datamp][all]