. . "X-Y POSITION INDICATOR FOR A DISPLAY SYSTEM"^^ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "1967-06-01"^^ . "1970-11-17"^^ . "345/164"^^ . "33/775"^^ . "178/18.01"^^ . "340/870.07"^^ . "340/870.44"^^ . . . "Douglas C Engelbart" . "" . . . "Stanford Research Institute" .