Johan Richter

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Oslo, SE

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Patents Grantslast 30 patents

Information Patent Grant
Reciprocal movable screens in a vertically elongated vessel
- Patent number 5,681,453
- Issue date Oct 28, 1997
- Kvaerner Pulping Technologies Aktiebolag
- Johan Richter
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE