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Author: WikiMatrix
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English[en]
Nichols was granted U.S. Patent 3,655,201 on April 11, 1972, two years before Rubik invented his Cube.
Tagalog[tl]
Nabigyan ng pag-aaring patente U.S. Patent 3,655,201 noong 11 Abril 1972, dalawang taon bago nalikha ni Rubik ang kaniyang napaunlad na kubo.