Jorma Makkonen

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Savonlinna, FI

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Patents Grantslast 30 patents

Information Patent Grant
Disk defibrator
- Patent number 4,219,166
- Issue date Aug 26, 1980
- Enso-Gutzeit Osakeyhtio
- Jorma Surakka
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE