LandOfFree - US Patents - Listing for Hydraulic and earth engineering,Subterranean or submarine pipe or cable laying, retrieving,...

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

Backfilling device and apparatus therefor

Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – With protection or indication of pipe or trench

Backfilling material and method of preparation thereof

Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Submerging – raising – or manipulating line of pipe or cable...

Ballasting method and apparatus for the installation of...

Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,...

Base of a manhole having a canal-bed liner

Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,...

Beaded liquid product and method for reducing coefficient of fri

Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Advancing subterranean length of pipe or cable

Boring and conduit/pipe system

Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Submerging – raising – or manipulating line of pipe or cable...

Buckle arrestor

Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Submerging – raising – or manipulating line of pipe or cable...

Buckle arrestor for pipe using closely spaced turns of rod to fo

Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Submerging – raising – or manipulating line of pipe or cable...

Building modules and assemblies made from such modules

Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Advancing subterranean length of pipe or cable

Bundle of pipes and method for parallel arrangement of pipes...

Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Submerging – raising – or manipulating line of pipe or cable...

Buoyant pipe system

Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Submerging – raising – or manipulating line of pipe or cable...

Buoyant propulsion underwater trenching apparatus

Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,...

Buried cable removal apparatus

Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,...

Buried pipe laying method

Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Submerging – raising – or manipulating line of pipe or cable...

Burying a conduit in the bottom of a body of water

Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Submerging – raising – or manipulating line of pipe or cable...

Burying device for submarine cables and method for guiding the s