4. Pumps
  5. Expansible chamber type
  6. Mechanically actuated distributor

Rolf Dose

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Control system for a two-cylinder thick matter pump

Pumps – Motor driven – Relatively movable pumping members driven by relatively...
Patent

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Device for driving a tunnel or drain pipe

Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Repair – replacement – or improvement
Patent

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Material feed tank for sludge pumps

Pumps – Expansible chamber type – Mechanically actuated distributor
Patent

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Method and arrangement for concreting vertical shafts

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Lining
Reexamination Certificate

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Profile ID: LFUS-PAI-P-251784

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