Karl I. Sagefors

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170 71 Oregrund, SE

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Patents Grantslast 30 patents

Information Patent Grant
Method for excavating rock cavities
- Patent number 5,855,452
- Issue date Jan 5, 1999
- Karl Ivar Sagefors
- E21 - EARTH DRILLING MINING
Information Patent Grant
Rock cavity
- Patent number 4,708,523
- Issue date Nov 24, 1987
- Boliden Aktiebolag
- Karl I. Sagefors
- E21 - EARTH DRILLING MINING
Information Patent Grant
System for the storage of petroleum products and other fluids in a...
- Patent number 4,363,563
- Issue date Dec 14, 1982
- WP-System Aktiebolag
- Tore J. Hallenius
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
System for the storage of radioactive material in rock
- Patent number 4,192,629
- Issue date Mar 11, 1980
- Tore J. Hallenius
- E21 - EARTH DRILLING MINING