4. Excavating
  5. Combined or convertible
  6. Combined with clamp, grapple, or shear

Roger A. Webel

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Control system for an excavator thumb and a method of...

Excavating – Combined or convertible – Combined with clamp – grapple – or shear
Reexamination Certificate

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Slow start control for a hydraulic hammer

Tool driving or impacting – Impacting devices – Hammer head constitutes piston of drive motor
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2435589

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