La Raphigraphe braillewriter (The Raphigraph, a.k.a braille typewriter, a.k.a planche à pistonons) was invented ca.1839 by Pierre François Victor Foucault (sometimes spelled Foucauld or Foucaux) of France. The Raphigraph utilized the braille principal of writing for the blind which was developed by Foucault's friend, Louis Braille. Though Foucault's Raphigraph was unsatisfactory to him, it was well received by others so it was produced in limited quantities.
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