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Educational apparatus

  • US 3,075,304 A
  • Filed: 04/05/1961
  • Issued: 01/29/1963
  • Est. Priority Date: 04/05/1961
  • Status: Expired due to Term
First Claim
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1. EDUCATIONAL APPARATUS COMPRISING A PLURALITY OF PIECE AND AT LEAST ONE MAGNETIC ELEMENT CARRIED BY EACH SAID PIECE, EACH PIECE BEING SHAPED TO FORM A CONSTITUENT PART OF A PLURALITY OF CHARACTERS AND SAID MAGNETIC ELEMENTS BEING SO DISPOSED IN SAID PIECES AS TO INHIBIT FORMATION OF IMPROPERLY SHAPED CHARACTERS.

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