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Primary view of Toothbrush.
Simon, John
November 2, 1920
Primary view of Method of Stretching and Securing Wire.
Coulter, Thomas H.
April 27, 1920
Primary view of Mirror-Holder
Barnard, Elmer
January 13, 1920
Primary view of Pump
Hunt, David
March 20, 1920
Primary view of Pump
Johnson, John L.
May 28, 1920
Primary view of Method of Sealing The Walls of Oil-Wells
Nolan, William E.
December 7, 1920
Primary view of Pump
Scott, Floyd L.
April 23, 1920
Primary view of Tobacco-Pipe.
Gerhard, William Henry.
February 3, 1920
Primary view of Toy Grasshopper
Ford, George E.
December 14, 1920
Primary view of Tool-Holding Implement.
Stoke, Josiah W.
May 11, 1920
Primary view of Process of Vaporizing Liquids and Apparatus Used in Connection Therewith.
McClinktock, Charles David
May 25, 1920
Primary view of Torch or Burner
Hardt, Benjiman F. & Taylor, Samuel T.
April 27, 1920
Primary view of Threading Apparatus For Pipes.
Adkins, Otto O.
December 28, 1920
Primary view of Method of Regulating the Load on Rotary Drills.
Hughes, Howard R.
November 2, 1920
Primary view of Pump.
Carden, David A.
April 13, 1920
Primary view of Pump.
Humason, Granville Allison
July 6, 1920
Primary view of Tool-Joint.
Stafford, George A. & Stafford, Roy M.
June 29, 1920
Primary view of Milk-Can Cover
Wisegarver, Marion Obidah
May 11, 1920
Primary view of Mail-Transferring Apparatus.
Bashell, Edward Allen & Smart, W. L.
April 20, 1920
Primary view of Man's Garment
Góngora, Tomás
April 20, 1920
Primary view of Toy.
Fermier, Victor Emanuel
March 2, 1920
Primary view of Mail Carrier or Container.
Blocker, Leck H.
April 27, 1920
Primary view of Tool Joint.
Lyle, Henry Claude
August 10, 1920
Primary view of Process of Removing Surface Finish
Cleveland, David P.
October 5, 1920
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