71424245
Oct 5, 1939
Apr 16, 1940
((De-Watering Wheels for Removing Water from Sand, Gravel, and Other Friable Material, ))Gyrating Sand and Aerating Screens for Screening Materials of a Fragmentary Classification and for Screening and Cooling Sand for Foundry Use (Portable and Semi-Portable), Coal, Ore, and Chip Screens, Shakeout Screens, for Cleaning Flasks and Castings, Knockout Screens for Knocking Out Cores, Sand, Wires, and Pipes from Castings, and Turn-Over Devices for Turning Engine Bases and Similar Heavy Products
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