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DATAMP Patents by Date for April 1958
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
12,828,674----[datamp][all]
82,829,436----[datamp][all]
152,830,411----[datamp][all]
222,831,202----[datamp][all]
292,832,246RE24,465---[datamp][all]