4. Tools
  5. Wrench, screwdriver, or driver therefor
  6. Handle or shank

Li Shiu Huang

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Driving head for power tool

Bleaching and dyeing; fluid treatment and chemical modification – Treatment of hides – skins – feathers and animal tissues – Tanning
Design Patent

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Fastener attracting device for tool

Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – For magnetizing or demagnetizing
Patent

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Lock device for rotatable tool driving head

Tools – Wrench – screwdriver – or driver therefor – Handle or shank
Patent

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Tool retaining device for retaining various tools

Tools – Wrench – screwdriver – or driver therefor – Having work engaging and force exerting portion inserted...
Reexamination Certificate

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Profile ID: LFUS-PAI-P-798264

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