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DATAMP Patents by Date for February 1921
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
11,367,066-D57,044--[datamp][all]
81,367,802-D57,068--[datamp][all]
151,368,403RE15,038---[datamp][all]
221,369,038-D57,113--[datamp][all]