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PL275411A1
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Method of protecting flap closures of gin tubs against damages and unloading cam mechanism for such gin tubs
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PL273836A1
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Apparatus for locking gin tubs in place on their running paths
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Platform for handling sections of self advancing roof supports
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PL272749A1
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Drive box of a drag conveyor
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Scraper conveyor drive ejector
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Apparatus for cleaning mine sewers
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PL236528A1
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Apparatus for pulling together ends of conveyor belts
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