Mauri Viitanen

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Poitsila, FI

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Patents Grantslast 30 patents

Information Patent Grant
Arrangement for removing thread-like impurities from a defiberizing...
- Patent number 5,094,715
- Issue date Mar 10, 1992
- Ahlstrom Corporation
- Risto Ljokkoi
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE