Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
Repair, replacement, or improvement
Inventor
active
Apparatus for cathodic protection of metal piping
Apparatus having a tubular inflatable bladder and a grout dispen
Method of relining sewers and water lines without excavation
Pipe liner and method of installation
Pipeline for relining sewers and water lines without excavation
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