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Vertical flail delimber
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Patent number 4,711,280
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Issue date Dec 8, 1987
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Weyerhaeuser Company
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Phillip A. Schmidt
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B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
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Method and apparatus for flail debarking
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Patent number 4,690,187
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Issue date Sep 1, 1987
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Weyerhaeuser Company
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Phillip A. Schmidt
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B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
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Feed roll with spikes
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Patent number 4,385,650
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Issue date May 31, 1983
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Weyerhaeuser Company
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Phillip A. Schmidt
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B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
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Self-releasing choker
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Patent number 4,358,144
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Issue date Nov 9, 1982
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Phillip A. Schmidt
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B66 - HOISTING LIFTING HAULING