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发明名称
Device for repairing underground sewers
摘要
A device for repairing underground sewers, pipe or the like provided a cylindrical hollow body, which has an elastically expandable casing acting as an outer wall.
申请公布号
US6755592(B2)
申请公布日期
2004.06.29
申请号
US20020141696
申请日期
2002.05.07
申请人
JANSSEN FRANZ
发明人
JANSSEN FRANZ
分类号
F16L55/1645;(IPC1-7):F16L55/16;F16L55/18
主分类号
F16L55/1645
代理机构
代理人
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地址
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