4. Excavating
  5. Cable-operated
  6. Boom-type

Michael G. Onsager

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Dragline excavating machine with direct drive hoist and drag...

Excavating – Cable-operated – Boom-type
Reexamination Certificate

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Hydraulic crowd control mechanism for a mining shovel

Motors: expansible chamber type – With motive fluid valve – Contracting chamber exhaust valve controlled by expanding...
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2925414

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