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DATAMP Patents by Date for February 1857
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
316,521RE425---[datamp][all]
1016,606----[datamp][all]
1716,642RE429---[datamp][all]
2416,681----[datamp][all]