Patent US 4190834A

Patent number	US 4190834A (click link for details and documents via Google Patents)
Title	Circuit and method for producing a full-screen cross-hair cursor on a raster-scan type display
Inventors	Douglas J. Doornink
Company	Tektronix Inc
Filing date	1978-10-16
Grant date	1980-02-26

Cited By:

Patent	Title	Inventors	Assignee	Granted
Patent US 4561049A	Control system employing a rotary knob	Sam M. Deleganes • Steven C. Den Beste	Tektronix Inc	1985-12-24