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Solved versions of, from left to right: original Pocket Cube, Eastsheen cube, V-Cube 2, V-Cube 2b. In March 1970, invented a 2×2×2 'Puzzle with Pieces Rotatable in Groups' and filed a Canadian patent application for it. Nichols's cube was held together with magnets. Nichols was granted on April 11, 1972, two years before Rubik invented his Cube. Nichols assigned his to his employer Moleculon Research Corp., which sued in 1982. In 1984, Ideal lost the patent infringement suit and appealed.

In 1986, the appeals court affirmed the judgment that Rubik's 2×2×2 Pocket Cube infringed Nichols's patent, but overturned the judgment on Rubik's 3×3×3 Cube. Permutations [ ].