1
Bernard N Riskin: Method of and means for accessing computerized data bases utilizing a touch-tone telephone instrument. R L Associates, Sperry Zoda & Kane, March 10, 1987: US04649563 (192 worldwide citation)

A conventional Touch-Tone telephone instrument is rendered functional in the same manner and to the same extent as a computer terminal having alpha-numeric capability, as regards transmission of queries directed to computerized data bases. It is also rendered functional as a recipient of information ...


2
Bernard N Riskin: Method of and means for accessing computerized data bases utilizing a touch-tone telephone instrument. Telac, Sperry Zoda & Kane, March 28, 1989: US04817129 (163 worldwide citation)

A conventional "Touch-Tone" telephone instrument is rendered functional in the same manner and to the same extent as a computer terminal having alpha-numeric capability, as regards transmission of queries directed to computerized data bases. It is also rendered functional as a recipient of informati ...