Rubik’s Cube 1983 US Patent Technical Diagram Chalkboard Style Poster
A chalkboard-style US patent diagram of the Rubik’s Cube, dated March 29, 1983, with twelve detailed technical figures.
Description
This U.S. Patent blueprint of the Rubik's Cube (Patent 4,378,116, March 29, 1983) lays out twelve technical drawings of the puzzle's inner mechanism on a dark chalkboard background. A perfect gift for puzzle fans, engineers and gamers, it adds smart retro character to offices, game rooms and dorms.









