Pirkko J. Virta

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Muhos, FI

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Patents Grantslast 30 patents

Information Patent Grant
Paper-making method and a combination of ingredients to be used in it
- Patent number 4,756,801
- Issue date Jul 12, 1988
- Kemira Oy.
- Olli J. Jokinen
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE