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Primary view of Landing Device for Aeroplanes.
Martin, Ernest L.
September 7, 1920
Primary view of Liquid Coating Composition
McKay, Arthur N. & Willis, William L.
October 19, 1920
Primary view of Valve-Flushing Means
Coulson, William J.
May 4, 1920
Primary view of Valve-Grinder.
Ralston, John
July 13, 1920
Primary view of Vaporizing Attachment.
Pope, Turner T.
June 1, 1920
Primary view of Liquid Dispensing Machinemm
Ogden, Clayton N.
October 19, 1920
Primary view of Trowel.
Parker, Barton J.
March 2, 1920
Primary view of Water-Heating Attachment for Internal-Combustion Motors.
Clayton, Oscar B. & Oberwetter, George T.
December 7, 1920
Primary view of Well-Packer.
Fletcher, Harold W.
April 13, 1920
Primary view of Well-Boring Apparatus
Decker, Harry R.
October 19, 1920
Primary view of Well-Drilling Device.
Church, Walter Lee
February 10, 1920
Primary view of Window Shade
Johnson, Charles G.
February 10, 1920
Primary view of Well-Cleaner.
Bashara, Samuel F.
August 6, 1920
Primary view of Tractor.
Weaver, William S.
March 23, 1920
Primary view of Vending-Machine.
Ogden, Carlton N.
January 6, 1920
Primary view of Hydrocarbon-Burner.
St. Wrba, Joseph J.
July 27, 1920
Primary view of Standing Valve
Adams, Thomas M.
September 21, 1920
Primary view of Spear
Gray, Ellsworth
April 20, 1920
Primary view of Pump Piston
Humason, Granville A.
January 13, 1920
Primary view of Pump-Piston.
Coulson, William J.
May 4, 1920
Primary view of Pump
Hunt, David
March 20, 1920
Primary view of Pump
Johnson, John L.
May 28, 1920
Primary view of Pump
Scott, Floyd L.
April 23, 1920
Primary view of Method of Regulating the Load on Rotary Drills.
Hughes, Howard R.
November 2, 1920
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