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Primary view of Well-Tubing Catcher
Wilson, Robert A.
April 12, 1921
Primary view of Hanger For Car-Doors.
Jordan, Charles H.
April 12, 1921
Primary view of Cotton-Chopper
Schwab, Bruno; Schneider, Richard & Hoegenauer, Haver
April 12, 1921
Primary view of Feed Spout Barrier
Allen, Charles
April 12, 1921
Primary view of Automatic Sand Trap
Allen, Charles
April 12, 1921
Primary view of Carbon-Removing Tool
Slagle, Eugene H.
April 12, 1921
Primary view of Dredge-Pump
Stenberg, Anders Gustaf
April 12, 1921
Primary view of Vehicle-Wheel
Allan, William N.
April 12, 1921
Primary view of Memorandum-Calendar.
Schramm, Henry A. & Hawkins, Jackson D.
April 12, 1921
Primary view of Electrically-Controlled Puller For Oil-Well Casings.
Dooley, William D.
April 12, 1921
Primary view of Metallic Mold for Concrete Walls
Bolton, George W.
April 12, 1921
Primary view of Magnetically-Operated Oil-Well Fishing-Tool.
Dooley, William D.
April 12, 1921
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