Wai W. Chung

Person

  • Kowloon, HK

Patents Grantslast 30 patents

  • Information Patent Grant

    Direct plug-in cordless screwdriver

    • Patent number 5,525,889
    • Issue date Jun 11, 1996
    • GSL Rechargeable Products Limited
    • Ka M. Chan
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS