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DATAMP Patents by Date for April 1922
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
41,411,335----[datamp][all]
111,412,069----[datamp][all]
181,412,888----[datamp][all]
251,413,676----[datamp][all]