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Chip feed system
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Patent number 5,617,975
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Issue date Apr 8, 1997
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Ahlstrom Machinery Inc.
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Jerry R. Johanson
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D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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Variable stage pressure diffuser
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Patent number 5,567,279
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Issue date Oct 22, 1996
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Ahlstrom Machinery Inc.
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Joseph R. Phillips
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D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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Drum washer sealing
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Patent number 5,265,447
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Issue date Nov 30, 1993
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Kamyr, Inc.
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Victor L. Bilodeau
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D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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