| 发明名称 |
ROER AV EXTRUDERBART MATERIAL, ROERBASERAT BYGGELEMENT SAMT FOERFARANDE FRAMSTAELLNING AV ROERBASERAT BYGGELEMENT |
| 摘要 |
The tube reinforcements (3) comprise flanges running in its axial direction and peripherally in the form of at least one assembly of right-hand or left-hand threaded spirals (3',3'') with a pitch per wind which is greater than the tube periphery. |
| 申请公布号 |
SE9101672(D0) |
申请公布日期 |
1991.05.31 |
| 申请号 |
SE19910001672 |
申请日期 |
1991.05.31 |
| 申请人 |
ERIK GUSTAV WENDEL NORDSTROEM |
发明人 |
ERIK GUSTAV WENDEL NORDSTROEM |
| 分类号 |
F16L9/12 |
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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