4. Hydraulic and earth engineering
  5. Subterranean or submarine pipe or cable laying, retrieving,...
  6. By means advancing along terrain and guiding pipe or cable...

Jon M. Promersberger

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Articulated aerial device including an upper boom...

Fire escape – ladder – or scaffold – Means maintaining platform level on angularly movable support – Swingable support
Reexamination Certificate

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Cable detensioning apparatus

Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – By means advancing along terrain and guiding pipe or cable...
Patent

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Profile ID: LFUS-PAI-P-1702135

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