Process for producing excavations in water-bearing ground
United States Patent 3260054
US Patent References:
/0168146.html
- - 0168146

/0300469.html
- - 0300469

/0438509.html
- - 0438509

Tunneling
- - 2055876


Inventors:
Hans, Lorenz
Publication Date:
07/12/1966
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Assignee:
ENTPR S LEON CHAGNAUD & FILS
Entpr, Joya Chabert S.
Primary Class:
405/138
Other Classes:
175/65, 175/62, 405/144
International Classes:
E21D9/06; E21D19/04; E21D19/00