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GB460742A
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Improvements in apparatus for the pneumatic separation of materials of different sizes and densities
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DE668187C
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Air jig
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GB450952A
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Process and apparatus for the pneumatic sorting of materials of different densities
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GB399146A
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Improvements in or relating to dust collectors for pneumatic separating apparatus
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US1901783A
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Apparatus for the pneumatic separation of materials of different densities
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GB371086A
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Apparatus for the pneumatic sorting of materials of different densities
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GB352943A
|
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Process and apparatus for the pneumatic separation of materials of different densities
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DE631451C
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Air setting device for coal or similar goods
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DE639834C
|
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Device for aerating coal and similar substances with components that differ according to their density
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US1866951A
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Apparatus for the pneumatic separation of materials of different densities
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GB320207A
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Process and apparatus for the pneumatic sorting of materials of different densities
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GB250585A
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Compressed-air or electric motor pump unit for secondary pumping in mines, quarries and like situations
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