Oy Kolster Ab

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Helsinki, FI

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Patents Grantslast 30 patents

Information Patent Grant
Method in connection with a roof drainage apparatus and a roof drai...
- Patent number 5,522,197
- Issue date Jun 4, 1996
- Oy Kolster AB
- Olavi Ebeling
- E04 - BUILDING
Information Patent Grant
Method and apparatus for measuring the wall thickness in a plastic...
- Patent number 4,304,995
- Issue date Dec 8, 1981
- Oy Kolster AB
- Paavo Huttunen
- G01 - MEASURING TESTING
Information Patent Grant
Over-pressure valve for ventilation
- Patent number D261925
- Issue date Nov 17, 1981
- Oy Kolster Ab
- Launo Laakkonen
- D23 - Environmental heating and cooling

Patents Applicationslast 30 patents

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