Peter Marti

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Belp, CH

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Patents Grantslast 30 patents

Information Patent Grant
Arrangement of prestressing tendons in a pressure tunnel
- Patent number 5,180,253
- Issue date Jan 19, 1993
- Erwin Siegfried
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Prestressed concrete lining in a pressure tunnel
- Patent number 5,066,167
- Issue date Nov 19, 1991
- VSL International AG
- Erwin Siegfried
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING