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Primary view of Slime-Pulp Thickener
Allen, Charles
August 17, 1920
Primary view of Bed.
Hellweg, Rudolph F.
August 17, 1920
Primary view of Coating Apparatus and Mathod.
Watrous, Edward L.
August 24, 1920
Primary view of Dirigible Headlight
Davis, Robert E.
August 30, 1921
Primary view of Method and Plant for Storing and Averaging Materials.
Cole, David & Bergman, Julius
August 30, 1921
Primary view of Apparatus for Separating or Concentrating Ores
Cole, David
August 31, 1920
Primary view of Metal-Working Device.
Bussel, Herman
August 16, 1921
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