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DATAMP Patents by Date for April 1941
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
12,236,854-D126,215--[datamp][all]
82,237,511----[datamp][all]
152,238,704----[datamp][all]
222,238,968----[datamp][all]
292,239,705----[datamp][all]