What are the orientations of the two plates invented by rubik, the inventor of Rubik's Cube?
Rubik, the inventor of the Rubik's Cube, invented the second-order Rubik's Cube. The earliest patent for the second-order Rubik's cube was filed by Professor rubik Arne on March 29th, 1983. The U.S. patent number is 4378 1 17, which was previously called the second-order cube with R structure. The second-order Rubik's Cube is the originator of all Rubik's Cube.