4. Tool driving or impacting
  5. Drive adjustable to completely change kind of drive
  6. Adjustable to impacting device

Masao Miwa

Inventor

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Electric hammer drill

Tools and hardware – Other tools and implements – With relative movement of parts while performing function
Patent

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Hammer drill with a mode change-over mechanism

Tool driving or impacting – Drive adjustable to completely change kind of drive – Adjustable to impacting device
Patent

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Impact tool with shock absorbing element

Tool driving or impacting – Impacting devices – With impact cushioning means
Reexamination Certificate

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Power driven hammer drill

Tool driving or impacting – Drive adjustable to completely change kind of drive – Adjustable to impacting device
Patent

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Profile ID: LFUS-PAI-P-1336179

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