| 发明名称 |
TRENCH SHORING FRAME |
| 摘要 |
A trench shoring frame comprising side wall structures, a backfill engaging structure connected to the side walls, and independently movable downward sections on each side wall with fluid pressure operated piston and cylinder devices to move these sections.
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| 申请公布号 |
US3693358(A) |
申请公布日期 |
1972.09.26 |
| 申请号 |
USD3693358 |
申请日期 |
1971.03.22 |
| 申请人 |
ANTHONY RONALD SEATON MORRICE |
发明人 |
ANTHONY RONALD SEATON MORRICE |
| 分类号 |
E02B11/02;E02D17/08;(IPC1-7):E21D7/00 |
主分类号 |
E02B11/02 |
| 代理机构 |
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代理人 |
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