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DATAMP Patents by Date for April 1991

This table shows the number of the first patent in the DATAMP database for each date, broken down by patent type.

Date Utility Reissue Design X AI Patents 2 5,004,984 - - - - [datamp] [all] 9 5,005,449 - - - - [datamp] [all] 16 5,007,151 - - - - [datamp] [all] 23 5,010,487 - - - - [datamp] [all] 30 5,011,324 - D316,512 - - [datamp] [all]