| 发明名称 |
Method of making an elbow for a downpipe, an elbow piece and a downpipe |
| 摘要 |
A process fabricates a pipe elbow for a rainwater drainpipe made of sheet metal with a longitudinal seam weld. A series of ribs are pressed on one side of the sheet metal at regular intervals.
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| 申请公布号 |
EP1570926(A1) |
申请公布日期 |
2005.09.07 |
| 申请号 |
EP20040405126 |
申请日期 |
2004.03.03 |
| 申请人 |
STRUB, MANFRED |
发明人 |
STRUB, MANFRED |
| 分类号 |
B21D9/14;E04D13/08;(IPC1-7):B21D9/14 |
主分类号 |
B21D9/14 |
| 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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