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

Shu Chi Chiang

Inventor

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Inventor

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Chuck device for power tool

Tools – Wrench – screwdriver – or driver therefor – Responsive to movement of work
Patent

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Extendible screw driver

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

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Ratchet mechanism for tool

Tools – Wrench – screwdriver – or driver therefor – Handle clutched to head
Reexamination Certificate

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Ratchet screw driver

Tools – Wrench – screwdriver – or driver therefor – Handle clutched to head
Patent

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Ratchet tool

Tools – Wrench – screwdriver – or driver therefor – Handle clutched to head
Reexamination Certificate

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Profile ID: LFUS-PAI-P-103644

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