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US4354825A
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Method and apparatus for drying coal
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US3679063A
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Mechanism for operating thickener rake arms
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US3419143A
|
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Apparatus for separating materials
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US2948384A
|
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Belt conveyor structure
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FR1157295A
|
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Belt conveyor
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GB797825A
|
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Belt conveyor structure
|
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US2853018A
|
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Centrifugal pump
|
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US2795141A
|
|
Sampler cutter
|
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US2759362A
|
|
Sampler cutter
|
|
US2819797A
|
|
Method and apparatus for cleaning corn and other cereal grains
|
|
US2717079A
|
|
Bath regulator for dense media separation systems
|
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US2717078A
|
|
Automatic density regulator
|
|
US2727631A
|
|
Centrifugal drier
|
|
US2666525A
|
|
Wash box hutch draw-off
|
|
FR926375A
|
|
Improvements to mechanical concentration devices
|
|
US2440005A
|
|
Finely divided crystalline limestone in heavy fluid for float-and-sink concentration
|
|
US2405976A
|
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Gate mechanism for mechanical concentrating devices
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US2217286A
|
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Coal washing machine
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US2083393A
|
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Washer box for coal and the like
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US2063829A
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Crusher
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