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Primary view of Wall Construction
Needham, Edward F.
April 19, 1921
Primary view of Pump-Actuating Mechanism.
Dean, Robert A.
April 19, 1921
Primary view of Treatment of Ores.
Hirt, Jules Hector
April 19, 1921
Primary view of Washing-Machine
Seifert, John W.
April 19, 1921
Primary view of Saw-Table Gage.
Krocker, Adolf G.
April 19, 1921
Primary view of Truck.
Ortgier, Walter C.
April 19, 1921
Primary view of Truss.
Downie, James H.
April 19, 1921
Primary view of Process of Forming Tubes
Rees, Herbert C.
April 19, 1921
Primary view of Concrete Building Mold.
Rossiter, Jay A
April 19, 1921
Primary view of Oil Burner.
Obenshain, Kyle Derias
April 19, 1921
Primary view of Process of Distilling Hydrocarbons
Averill, Willard C., Jr.
April 19, 1921
Primary view of Reagent for Liquid-Battery Cells.
Humphrey, David L. & Pittman, Carl L.
April 19, 1921
Primary view of Filtering Material.
Müller, Enrique
April 19, 1921
Primary view of Grapple for Oil-Wells and the Like.
Reed, Clarence E.
April 19, 1921
Primary view of Ice-Carrier.
Cronin, John J.
April 19, 1921
Primary view of Reamer.
Humason, Granville A.
April 19, 1921
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