US4947906A - Debarker - Google Patents
Flail drum system US5163627A (en) * 1989-10-27: 1992-11-17: Sovadec: Process for the treatment of waste substances for the purposes of recovering organic matter, and device for its implementation US5322104A (en) * 1993-05-04: 1994-06-21: Wood Technology, Inc. Flail drum machines and methods
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