| 发明名称 |
Removable floor sink drain lock |
| 摘要 |
Improved floor sink drain screen locks having expandable means for sealingly engaging the walls of a floor sink drain, yet being readily collapsible for quick and easy removal when desired.
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| 申请公布号 |
US8307469(B1) |
申请公布日期 |
2012.11.13 |
| 申请号 |
US20090387030 |
申请日期 |
2009.04.28 |
| 申请人 |
COHEN TODD;TNT PRODUCTS, LLC |
发明人 |
COHEN TODD |
| 分类号 |
A47K1/14;E03C1/26 |
主分类号 |
A47K1/14 |
| 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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