From the patent: "FIG. 3a is a perspective view of a novel digital joystick control utilized in the video game system of FIG. 1; FIG. 3b is a side elevational view of the joystick control of FIG. 3a;"
Original patent image for the Atari 5200 joystick controller.
1983 patent schematic of a joystick, assigned to the North American Philips Corporation.