Hannu Maa

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Jarvenpaa, FI

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Patents Grantslast 30 patents

Information Patent Grant
System of rolls in a supercalender
- Patent number 4,936,207
- Issue date Jun 26, 1990
- Valmet Paper Machinery Inc.
- Juhani Niskanen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE