| 发明名称 |
Mine door leaf and method of manufacture thereof |
| 摘要 |
A mine door leaf of hollow construction with the hollow infilled with a fluent filling material which, when solidified, attaches to the enclosing components of the door leaf.
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| 申请公布号 |
US2003079423(A1) |
申请公布日期 |
2003.05.01 |
| 申请号 |
US20010003353 |
申请日期 |
2001.11.01 |
| 申请人 |
KENNEDY WILLIAM R.;KENNEDY JOHN M. |
发明人 |
KENNEDY WILLIAM R.;KENNEDY JOHN M. |
| 分类号 |
E21F17/12;(IPC1-7):E06B1/04 |
主分类号 |
E21F17/12 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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