TRENCH SHORING APPARATUS
United States Patent 3543522
US Patent References:
Trench shoring machine
- - 3089310
Self-propelled and self-levelling open trench caisson
- - 3204415
Rotary cutter wheel tunneling machine
- - 3382002
Trench shoring machine
- - 3089310
Self-propelled and self-levelling open trench caisson
- - 3204415
Rotary cutter wheel tunneling machine
- - 3382002
Inventors:
Torti, Emanuel
Publication Date:
12/01/1970
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Export Citation:
Assignee:
Emanuel, Torti
Primary Class:
International Classes:
E02D17/08; E21D9/06; E02D17/06; E21D5/00
Foreign References:
| DE597063C |