| 发明名称 |
SURFACE APPARATUS FOR HANDLING AN ELASTIC COLUMN |
| 摘要 |
This apparatus is provided with at least two devices for gripping an elastic column, including a lower and an upper gripping device, one at least of these devices being displaceable along the axis of the column in a released position.
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| 申请公布号 |
US3711000(A) |
申请公布日期 |
1973.01.16 |
| 申请号 |
USD3711000 |
申请日期 |
1971.09.09 |
| 申请人 |
INST FR DU PETROLE DES CARBURANTS ET LUBRIFIANTS,FR |
发明人 |
REYNARD R,FR;TINDY R,FR;DANIEL E,FR |
| 分类号 |
E21B19/00;E21B19/22;(IPC1-7):B65H17/36 |
主分类号 |
E21B19/00 |
| 代理机构 |
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代理人 |
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