Erwin Isler

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Rapperswil, CH

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Patents Grantslast 30 patents

Information Patent Grant
Process, anchoring member, and clamping device for clamping a rod
- Patent number 5,022,791
- Issue date Jun 11, 1991
- H. Weidmann AG.
- Erwin Isler
- E21 - EARTH DRILLING MINING
Information Patent Grant
Mine wall support anchor
- Patent number 4,664,573
- Issue date May 12, 1987
- H. Weidmann AG.
- Erwin Isler
- E21 - EARTH DRILLING MINING
Information Patent Grant
Arrangement for force transfer between longitudinally stressed members
- Patent number 4,538,940
- Issue date Sep 3, 1985
- H. Weidmann AG.
- Erwin Isler
- E21 - EARTH DRILLING MINING
Information Patent Grant
Tie rod assembly for rock borehole anchor
- Patent number 4,523,880
- Issue date Jun 18, 1985
- H. Weidmann, AG
- Erwin Isler
- E21 - EARTH DRILLING MINING