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DATAMP Patents by Date for April 1930
This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.
DateUtilityReissueDesignXAIPatents
11,752,422----[datamp][all]
81,753,191----[datamp][all]
151,754,222----[datamp][all]
221,755,822----[datamp][all]
291,756,121----[datamp][all]