Sven-Eric Johansson

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Torshalla, SE

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Patents Grantslast 30 patents

Information Patent Grant
Method and arrangement for optimizing of the function of a door closer
- Patent number 4,973,894
- Issue date Nov 27, 1990
- Oy Wartsila AB
- Sven-Eric Johansson
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES