referring to colour theory

Industry

  • CPC
  • A63F2009/0605
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Patents Grantslast 30 patents

  • Information Patent Grant

    Hue sequence device

    • Patent number 4,796,888
    • Issue date Jan 10, 1989
    • Nigel Louez
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Grant

    1787521

    • Patent number 1,787,521
    • Issue date Jan 6, 1931
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Grant

    1443346

    • Patent number 1,443,346
    • Issue date Jan 30, 1923
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Grant

    537887

    • Patent number 537,887
    • Issue date Apr 23, 1895
    • A63 - SPORTS GAMES AMUSEMENTS