METODO E EQUIPAMENTO PARA ESCAVAR VALAS SOB TUBULACOES SUBMERSAS

1492151 Sub sea trench excavators SAIPEM SpA 11 Feb 1976 [11 Feb 1975] 05468/76 Heading E1F Submersible apparatus 1 that is advanceable stepwise in either direction along a submerbed pipeline 49 or like elongate member to dig a trench beneath the member comprises at least two longitudinally extendin...

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Hauptverfasser: ROSA G, PREDONZANI N, CASAGRANDE G
Format: Patent
Sprache:por
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