TREA

Chung Nin Ko

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  • Kowloon, HK
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Patents Grantslast 30 patents

  • Information Patent Grant

    Three-ring binder with actuating crank
    • Patent number 6,637,968
    • Issue date Oct 28, 2003
    • Hong Kong Stationery Manufacturing Co., Ltd.
    • Chung Nin Ko
    • B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
  • Information Patent Grant

    Locking booster ring binder mechanism
    • Patent number 6,206,601
    • Issue date Mar 27, 2001
    • Hong Kong Stationery Manufacturing Co., Ltd.
    • Chung Nin Ko
    • B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
  • Information Patent Grant

    Ring binder assembly
    • Patent number 5,964,544
    • Issue date Oct 12, 1999
    • Hong Kong Stationery Manufacturing Co., Ltd.
    • Chung Nin Ko
    • B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
  • Information Patent Grant

    Ring binder assembly
    • Patent number 5,882,135
    • Issue date Mar 16, 1999
    • Hong Kong Stationery Mfg. Co., Ltd.
    • Chung Nin Ko
    • B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER

Patents Applicationslast 30 patents