发明名称 |
Reinforced separable sectional hermetic protective covering |
摘要 |
Improved sectional or modular element for use in construction of or as a hermetically sealed protective coverings. The sectional or modular element comprises a main covering portion and lateral portions integral therewith and extending along opposite sides thereof. The main covering portion and the lateral portions integral therewith are characterized by corrugations formed therein to impart strength and rigidity thereto.
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申请公布号 |
US4109438(A) |
申请公布日期 |
1978.08.29 |
申请号 |
US19740502660 |
申请日期 |
1974.09.04 |
申请人 |
DE LA CONCHA, FRANCISCO |
发明人 |
DE LA CONCHA, FRANCISCO |
分类号 |
E04C2/32;E04D3/30;E04F13/12;(IPC1-7):E04C2/32 |
主分类号 |
E04C2/32 |
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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