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Primary view of Well Drilling Apparatus.
Thorniley, Clarence W. & Thorniley, Charles, D.
January 14, 1919
Primary view of Motor Starter
Maha, Irwin J.
January 7, 1919
Primary view of Gripping Tool
Drake, Charles W.
September 26, 1919
Primary view of Sack-Protector.
Roer, William A.
March 4, 1919
Primary view of Rifle.
Brannon, Virgil C.
January 14, 1919
Primary view of Device for Recovering Tools from Wells.
Scott, Augustus B.
September 9, 1919
Primary view of Fuel Rod Coupling
Sheldon, W. J. & Allen, C. H.
June 3, 1919
Primary view of Power-Transmitting Mechanism.
Grubb, Orin A.
March 11, 1919
Primary view of Bevel-Square
Seay, Mathew E.
December 9, 1919
Primary view of Card Holder
Hill, L. W.
March 4, 1919
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