4. Tool driving or impacting
  5. Impacting devices
  6. Hammer head constitutes piston of drive motor

Stefan Mewes

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Diesel pile hammer

Internal-combustion engines – Free piston – Single chamber; one piston
Reexamination Certificate

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Tool driving or impacting – Impacting devices – Hammer head constitutes piston of drive motor
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Profile ID: LFUS-PAI-P-1787465

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