Erich Droscher

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Patents Grantslast 30 patents

Information Patent Grant
System for monitoring the movement of a cutting tool of a tunnel-dr...
- Patent number 4,412,700
- Issue date Nov 1, 1983
- Voest-Alpine Aktiengesellschaft
- Alfred Zitz
- G01 - MEASURING TESTING
Information Patent Grant
Process and apparatus for controlling the water supply to the cutti...
- Patent number 4,368,918
- Issue date Jan 18, 1983
- Voest-Alpine Aktiengesellschaft
- Erich Droscher
- E21 - EARTH DRILLING MINING
Information Patent Grant
Device for preventing collision between part of the cutting arm and...
- Patent number 4,351,564
- Issue date Sep 28, 1982
- Voest-Alpine Aktiengesellschaft
- Erich Droscher
- E21 - EARTH DRILLING MINING