| 发明名称 |
CENTRAL VACUUM SYSTEM WALL VALVE SPACING PLATE |
| 摘要 |
<p>A central vacuum system wall valve spacing plate is described which includes bosses of varying sizes so as to be adaptable to a variety of spacing requirements for the components of the wall valve.</p> |
| 申请公布号 |
CA2056156(C) |
申请公布日期 |
1999.10.05 |
| 申请号 |
CA19912056156 |
申请日期 |
1991.11.25 |
| 申请人 |
|
发明人 |
MCKNIGHT, DARWIN T. |
| 分类号 |
A47L5/38;A47L9/24;F16L37/60;(IPC1-7):A47L9/00 |
主分类号 |
A47L5/38 |
| 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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