The History of Rubik's Cube and Inventor Erno Rubik

Even the inventor of the Rubik's Cube, Erno Rubik, was initially stumped by his iconic puzzle, which is the most popular puzzle in history.

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History of Band-Aids: From Earle Dickson to Boy Scouts

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The History of the Answering Machine

Symmetry, Free Full-Text

Rubik's Cube - A History of the 1980s Puzzle

History of Bar Code and Bernard Silver

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Roberto del Rosario, Inventor of a Karaoke Machine

Roberto del Rosario, Inventor of a Karaoke Machine

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