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DATAMP Patents by Date for February 1933
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
71,896,437-D89,211--[datamp][all]
141,897,405----[datamp][all]
211,898,031-D89,308--[datamp][all]
281,899,201----[datamp][all]