US2692088A
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Dust guard
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GB692689A
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Improvements in and relating to swing hammer assembly
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US2661160A
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Reversible hammermill with powerdriven impactor surfaces
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US2692087A
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Wall plate structure for drum type breaker mills
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US2644644A
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Two stage hammer mill
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US2620989A
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Swing hammer assembly
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US2666589A
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Screen bar
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US2670140A
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Lifting shelf
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US2575380A
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Crusher mill
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US2575057A
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Endless breaker plate structure for crushers
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US2600964A
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Apparatus for reduction of frangible material
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US2545202A
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Lining structure for rotary crushers
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US2514111A
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Reversible hammer mill with material-deflecting feed structure
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US2516295A
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Process for preparing homogeneously partially polymerized particles of thermosetting material
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US2464774A
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Single roll crusher with opposed toothed-apron feed
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US2471068A
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Reversible hammer mill with power driven impactor surfaces
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US2355050A
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Crushing machinery
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US2411302A
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Impactor
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US2321027A
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Coal breaker
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US2297782A
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Crushing machine
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