Keyboard Keycap Patent Schematic Chalkboard 1984 Retro Tech Office Poster

This patent-style print reproduces the October 23, 1984 keycap design (Fig. 1, sheet 1 of 3, patent 4,479,111) in white linework on a dark chalkboard ground. A clever gift for programmers, engineers, and keyboard enthusiasts. It adds geek-chic character to offices, desks, and gaming rooms.