TREA

Duncan Tong

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  • Hong Kong, HK
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Patents Grantslast 30 patents

  • Information Patent Grant

    Aquatic toys
    • Patent number 4,832,650
    • Issue date May 23, 1989
    • Duncan Products Limited
    • Duncan Tong
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Grant

    Swimming marine creature toys
    • Patent number 4,713,037
    • Issue date Dec 15, 1987
    • Duncan Products Ltd.
    • Duncan Tong
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Grant

    Connection device for toy vehicle tracks
    • Patent number 4,150,789
    • Issue date Apr 24, 1979
    • Playart Limited
    • Duncan Tong
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Grant

    Aquatic figure toy
    • Patent number 4,135,326
    • Issue date Jan 23, 1979
    • Playart Limited
    • Duncan Tong
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Grant

    Toy track section with electrical connector safety means
    • Patent number 4,081,133
    • Issue date Mar 28, 1978
    • Playart Limited
    • Duncan Tong
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Grant

    Submersible toy
    • Patent number 3,935,665
    • Issue date Feb 3, 1976
    • Playart Ltd.
    • Duncan Tong
    • A63 - SPORTS GAMES AMUSEMENTS