发明名称 |
Vent with screen or perforated element |
摘要 |
A vent includes an outer element including an outer perforated area having at least one perforation and an inner element having at least one perforation and a peripheral portion. The outer element and the inner element are separated by a distance to define a plenum between the outer element and the inner element.
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申请公布号 |
US8448398(B2) |
申请公布日期 |
2013.05.28 |
申请号 |
US20100901263 |
申请日期 |
2010.10.08 |
申请人 |
PEREZ DAVID;ALSAGER RICHARD L.;STOCKTON PRODUCTS |
发明人 |
PEREZ DAVID;ALSAGER RICHARD L. |
分类号 |
E04F17/00 |
主分类号 |
E04F17/00 |
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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