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| US4093506 | 10 Mar 1976 | 6 Jun 1978 | Kamyr Aktiebolag | Method and apparatus for effecting even distribution and mixing of high consistency pulp and treatment fluid | | US5171405 | 27 Sep 1990 | 15 Dic 1992 | Kamyr, Inc. | Reactor having a discontinuous conduit means between surfaces of a downwardly extending stationary spiral |
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