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Primary view of Apparatus For Treating Petroleum.
Andrews, Benjamin & Averill, Willard C., Jr.
October 28, 1919
Primary view of Patent for Diver's Mask
Runyan, Benjamin F.
December 9, 1919
Primary view of Automatic Fountain Valve For Locomotives
Yeamans, Eugene N.
May 6, 1919
Primary view of Lint Separator and Cleaner.
Meyers, Frank Wynne
August 12, 1919
Primary view of Apparatus for Separating Liquids in Emulsion.
McKibben, Charles W.
May 27, 1919
Primary view of Bulkhead.
Sands, Edward E.
March 25, 1919
Primary view of Cross-Roller Drill-Bit
Hughes, Howard R.
December 27, 1919
Primary view of Combination Drill Bit and Drill Shank
Humason, Granville A.
December 30, 1919
Primary view of Conveyer System.
Hanak, Edward
March 18, 1919
Primary view of Cooking-Stove
Cook, Charles F.
March 18, 1919
Primary view of Acetylene-Gas Generator.
Furr, Oscar M.
January 21, 1919
Primary view of Core-Barrel.
Humason, Granville A. & Childs, William L.
October 14, 1919
Primary view of Apparatus for the Conversion of Liquids, Fluids, and Oils.
Adams, Joseph H.
November 4, 1919
Primary view of Apparatus for Vaporization and Distillation of Petroleum and Other Hydrocarbon Oils.
Humason, Granville A.
January 21, 1919
Primary view of Apparatus for Treating Hydrocarbons.
Andrews, Benjamin & Averill, Willard C., Jr.
August 5, 1919
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