Karl B. Pettersson

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Gavle, SE

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Patents Grantslast 30 patents

Information Patent Grant
Method of covering the chemical losses in pulp production
- Patent number 4,533,433
- Issue date Aug 6, 1985
- A. Ahlstrom Osakeyhtio
- Karl B. Pettersson
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE