4. Boring or penetrating the earth
  5. Enlargement of existing pilot throughbore requiring...

Paul W. Hau

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Cable pulling machine

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

Implements or apparatus for applying pushing or pulling force – Method or apparatus for placement of conductive wire – Conduit snakes
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Pipe replacement method and rotary impact mechanism for pipe...

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

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Roller pipe burster

Boring or penetrating the earth – Enlargement of existing pilot throughbore requiring...
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Winch with telescoping mast

Implements or apparatus for applying pushing or pulling force – Apparatus for hauling or hoisting load – including driven... – Device includes rotatably driven – cable contacting drum
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Profile ID: LFUS-PAI-P-2610753

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