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DATAMP Patents by Date for March 1821
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
3---X3,306-[datamp] 
9---X3,308-[datamp] 
19---X3,309-[datamp] 
20---X3,310-[datamp] 
21---X3,314-[datamp] 
23---X3,315-[datamp] 
28---X3,316-[datamp] 
29---X3,319-[datamp] 
30---X3,320-[datamp]