| 发明名称 |
Fire resistant fitting floor holes |
| 摘要 |
A fire resistant fitting for use in sealing a floor hole and including a pair of plates having an expandable material therebetween for securing the fitting in the hole and a fire resistant material suspended in the opening from the lower plate by a simple twistable metal tang.
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| 申请公布号 |
US4270318(A) |
申请公布日期 |
1981.06.02 |
| 申请号 |
US19780961089 |
申请日期 |
1978.11.15 |
| 申请人 |
SQUARE D COMPANY |
发明人 |
CARROLL, JAMES C.;CHAPMAN, DONALD L.;MCGOLDRICK, GILBERT A. |
| 分类号 |
H02G3/18 |
主分类号 |
H02G3/18 |
| 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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