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DATAMP Patents by Date for April 1953
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
72,633,777----[datamp][all]
142,634,559----[datamp][all]
212,635,326----[datamp][all]
282,636,506----[datamp][all]