Alf R. de Ruvo

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Sundsvall, SE

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Patents Grantslast 30 patents

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Method of processing waste paper with white water and aluminum recy...
- Patent number 4,737,238
- Issue date Apr 12, 1988
- Sunds Defibrator Aktiebolag
- Alf R. de Ruvo
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE