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Classification and/or grading
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Patent number 4,634,456
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Issue date Jan 6, 1987
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Coal Industry (Patents) Limited
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Nicholas Syred
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B04 - CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL...
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Cyclone separators
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Patent number 4,585,466
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Issue date Apr 29, 1986
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Coal Industry (Patents) Limited
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Nicholas Syred
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B04 - CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL...
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Combustors
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Patent number 4,584,948
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Issue date Apr 29, 1986
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Coal Industry (Patents) Limited
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Nicholas Syred
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F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
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Fluidic switched fluid cleaning
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Patent number 4,432,778
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Issue date Feb 21, 1984
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Coal Industry (Patents) Limited
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Michael J. Parkinson
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Fluidic devices
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Patent number 4,249,575
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Issue date Feb 10, 1981
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United Kingdom Atomic Energy Authority
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Nicholas Syred
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F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
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Fluted,-stepped, pour nozzle
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Patent number 4,176,769
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Issue date Dec 4, 1979
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USS Engineers and Consultants, Inc.
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Joseph W. Cudby
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B22 - CASTING POWDER METALLURGY