4. Tool driving or impacting
  5. Means to drive tool about an axis
  6. Means to hold and relatively rotate sections of tool shaft

Cheng-Te Hu

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Assembling screwdriver with hexagonal socket design

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

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Multi-function electric tool

Tool driving or impacting – Means to drive tool about an axis – Means to hold and relatively rotate sections of tool shaft
Patent

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Profile ID: LFUS-PAI-P-653659

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