发明名称 |
Method of production of cast concrete tunnel sections involves forming semi-circular tunnel sections from blanks forming channel section |
摘要 |
The method of producing cast concrete tunnel sections uses a channel section which is covered with stone sections each formed from a blank with a semi-circular cross section to form a semi-toroidal shape which is sectioned along its middle axis. Claims include a blank and tunnel section
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申请公布号 |
DE19829093(C1) |
申请公布日期 |
2000.03.02 |
申请号 |
DE19981029093 |
申请日期 |
1998.06.30 |
申请人 |
MERBELER AG |
发明人 |
HUETTNER, LORENZ |
分类号 |
E03F5/02;(IPC1-7):E03F5/02;E03F3/04 |
主分类号 |
E03F5/02 |
代理机构 |
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代理人 |
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主权项 |
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