Jaakko O. Barsk

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Tampere, FI

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Patents Grantslast 30 patents

Information Patent Grant
Feed screw
- Patent number 5,044,489
- Issue date Sep 3, 1991
- Oy Partek AB
- Jaakko Barsk
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Apparatus for the casting of hollow slabs out of concrete
- Patent number 4,786,242
- Issue date Nov 22, 1988
- Oy Partek AB
- Jaakko O. Barsk
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Method for the casting of hollow slabs out of concrete
- Patent number 4,608,216
- Issue date Aug 26, 1986
- Oy Partek AB
- Jaakko O. Barsk
- B28 - WORKING CEMENT, CLAY, OR STONE