| 发明名称 |
Oval pipe with a flat base |
| 摘要 |
The installation of pipes having oval cross sections is made easier by including an installation portion which has a flat base perpendicular to the major axis of the oval cross section.
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| 申请公布号 |
US4020639(A) |
申请公布日期 |
1977.05.03 |
| 申请号 |
US19750645134 |
申请日期 |
1975.12.29 |
| 申请人 |
SEKISUI KAGAKU KOGYO KABUSHIKI KAISHA |
发明人 |
NAGARE, SYOJI;OSAWA, KOZO |
| 分类号 |
F16L9/12;E02B11/00;E03C1/122;E03F3/04;F16L9/00;F16L9/127;(IPC1-7):E02B13/00 |
主分类号 |
F16L9/12 |
| 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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