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DATAMP Patents by Date for April 1959
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
72,880,638-D184,835--[datamp][all]
142,881,529-D184,860--[datamp][all]
212,882,649----[datamp][all]
282,883,737----[datamp][all]