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DATAMP Patents by Date for April 1952
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
12,590,992----[datamp][all]
82,591,901----[datamp][all]
152,592,745----[datamp][all]
222,594,057----[datamp][all]
292,594,351----[datamp][all]