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FR2555148A1
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Extraction device, particularly for circular-based silos
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BR8108569A
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Improvement in device for moving a bulk product
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ES8301817A1
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"improvements in the devices for the displacement of loose products in powder, granulated or pasta condition".
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EP0082899A1
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Conveyor screws for displacing bulk material
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FR2501654A1
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Improvement in devices for extracting bulk solid materials in the finely divided condition from the bottom of a silo
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FR2473481A1
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Pneumatic silo emptying system - has revolving horizontal arm with air inlet holes and vertical outlet
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