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Primary view of Hydraulic Swivel
Johnston, Horace G.; Sturm, William P. & Sturm, Jacob W.
October 27, 1903
Primary view of Pump Attachment for Portable Cans
Blackmon, Paul Jones
September 29, 1903
Primary view of Compressed Air Elevator for Fluids
Sloan, James W.
May 12, 1903
Primary view of Coupling for Well-Drilling Machines
Johnston, Horace G.
April 14, 1903
Primary view of Hydrocarbon-Burner
Higgins, James Franklin
March 31, 1903
Primary view of Gripping Device for Well-Boring Apparatus
Johnston, Horace G.
January 20, 1903
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