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Portable cleaning apparatus
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Calibrating means for radioactive test apparatus which tests fluent material moving through a conduit
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Gravimetric feeder and method of filling voids therein or in other pressure vessels
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Non-segregating system for handling and feeding solid particulate material
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Method of manufacture of gear teeth
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Bulk material valve
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Valve operating mechanism
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Air lock coal scale
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Anti-clogging device
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Pressurized coal scale
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Conveyer distribution system for aggregate materials
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Automatic apron fed hopper scale for bulk materials
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Controlling device
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Gravimetric feeder
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Material handling apparatus
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CA391047A
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Solid material controlling device
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Method of calibrating a gravimetric feeder
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CA758428A
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Pressure vessel and the method of making such pressure vessel
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