Siegfried Sigott

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Zeltweg, OE

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Patents Grantslast 30 patents

Information Patent Grant
Device for consecutively supporting a drift
- Patent number 4,075,856
- Issue date Feb 28, 1978
- Vereinigte Osterreichische Eisen- und Stahlwerke-Alpine Montan Aktiengesellsc...
- Siegfried Sigott
- E21 - EARTH DRILLING MINING
Information Patent Grant
Device for connecting the bits with the cutting head of a drift adv...
- Patent number 4,057,260
- Issue date Nov 8, 1977
- Vereinigte Osterreichische Eisen-und Stahlwerke
- Siegfried Sigott
- E21 - EARTH DRILLING MINING
Information Patent Grant
Shield structure
- Patent number 4,020,640
- Issue date May 3, 1977
- Vereinigte Osterreichische Eisen- und Stahlwerke-Alpine Montan Aktiengesellsc...
- Siegfried Sigott
- E21 - EARTH DRILLING MINING
Information Patent Grant
Dividing cutting machine
- Patent number 3,972,429
- Issue date Aug 3, 1976
- Vereinigte Osterreichische Eisen- und Stahlwerke-Alpine Montan Aktiengesellsc...
- Siegfried Sigott
- E21 - EARTH DRILLING MINING
Information Patent Grant
Drum mining head with cutter pattern
- Patent number 3,958,832
- Issue date May 25, 1976
- Vereinigte Osterreichische Eisen- und Stahlwerke-Alpine Montan Aktiengesellsc...
- Siegfried Sigott
- E21 - EARTH DRILLING MINING