| 发明名称 |
Concealed retractable housings |
| 摘要 |
The drawings illustrate an apparatus for housing articles between a ceiling and a roof, utilizing a switch means for actuating suitable electrically operated pivoting means for retracting the apparatus into the ceiling and lowering it from the ceiling.
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| 申请公布号 |
US4941718(A) |
申请公布日期 |
1990.07.17 |
| 申请号 |
US19880171038 |
申请日期 |
1988.03.21 |
| 申请人 |
ALEXANDER MACHINERY, INC. |
发明人 |
ALEXANDER, III, WILLIAM J.;CHAPMAN, FRED A. |
| 分类号 |
A47B88/22;B60R11/00;B60R11/02;E05G1/00 |
主分类号 |
A47B88/22 |
| 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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