TREA

Ringsun (Shenzhen) Industrial Limited

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  • Shenzhen, CN
Organizations

Patents Grantslast 30 patents

  • Information Patent Grant

    Electric pencil sharpener
    • Patent number 7,726,365
    • Issue date Jun 1, 2010
    • Ringsun (Shenzhen) Industrial Limited
    • Jingyi Hu
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Finger musical instrument
    • Patent number 7,674,969
    • Issue date Mar 9, 2010
    • Ringsun (Shenzhen) Industrial Limited
    • Keduan Xu
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Grant

    Electric pencil sharpener
    • Patent number 7,581,573
    • Issue date Sep 1, 2009
    • Ringsun (Shenzhen) Industrial Limited
    • Jingyl Hu
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Electric stapler
    • Patent number 7,311,238
    • Issue date Dec 25, 2007
    • Ringsun (Shenzhen) Industrial Limited
    • Yingming Liu
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Automatic pencil sharpener
    • Patent number 7,240,703
    • Issue date Jul 10, 2007
    • Ringsun (Shenzhen) Industrial Limited
    • Jingyi Hu
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES