|
US2620946A
|
|
Oscillating feeder
|
|
US2598934A
|
|
Separator having flow-directing and self-sealing discharge means
|
|
US2513960A
|
|
Movable deck pneumatic coal cleaner
|
|
US2446140A
|
|
Apparatus for pneumatically separating relatively moist comminuted material
|
|
US2350625A
|
|
Process and apparatus for separating material
|
|
US2374865A
|
|
Gravity separator
|
|
US2334337A
|
|
Separator and valve therefor
|
|
US2291661A
|
|
Apparatus for dedusting and cleaning coal and the like
|
|
US2279590A
|
|
Apparatus for separating particulate materials
|
|
US2154784A
|
|
Resistance pack for gravity separators and the like
|
|
US2107781A
|
|
Coaling gate for locomotives
|
|
GB462293A
|
|
Improvements in and relating to hoisting or lowering apparatus
|
|
GB460451A
|
|
Improvements in and relating to hoisting or lowering apparatus
|
|
GB462291A
|
|
Improvements in and relating to hoisting or lowering apparatus
|
|
GB462292A
|
|
Improvements in and relating to hoisting or lowering apparatus
|
|
US2245942A
|
|
Apparatus for separating material
|
|
US2019661A
|
|
Universal screen
|
|
US2086584A
|
|
Apparatus for separating and cleaning materials
|
|
US1855895A
|
|
Hydraulic cleaner control
|
|
US1902917A
|
|
Classifying table
|
