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DATAMP Patents by Date for April 1940
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
22,195,557----[datamp][all]
92,196,223----[datamp][all]
162,197,076----[datamp][all]
232,198,090RE21,434---[datamp][all]
302,198,876----[datamp][all]