Hans-Erik Rye Engstrom

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Sundsvall, SW

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Patents Grantslast 30 patents

Information Patent Grant
Countercurrently bleaching high consistency cellulose pulp with oxygen
- Patent number 4,022,654
- Issue date May 10, 1977
- Sunds Aktiebolag
- Hans-Erik Rye Engstrom
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE