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DATAMP Patents by Date for April 1948
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
62,439,336-D149,173--[datamp][all]
132,439,568----[datamp][all]
202,439,965----[datamp][all]
272,440,440----[datamp][all]