Charles J. Lang

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Longview, WA, US

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Patents Grantslast 30 patents

Information Patent Grant
Ammonia-ketone pulping process
- Patent number 3,951,734
- Issue date Apr 20, 1976
- Weyerhaeuser Company
- Gerrit G. DeHaas
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE