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Primary view of Compound Air-Compressor.
Jones, Oceola
February 17, 1920
Primary view of Apparatus for Treatment of Oil Emulsions.
McKibben, Charles W.
January 13, 1920
Primary view of Apparatus for Extracting Minerals from Ores.
Shires, George M.
January 13, 1920
Primary view of Apparatus For Forcing Fluid From Wells.
Bodungen, Charles G.
February 22, 1921
Primary view of Apparatus for Building Concrete Structures.
Sands, Edward E.
November 14, 1922
Primary view of [Letter from L. C. Fink to C. C. Cox, January 13, 1920]
Fink, L. C.
January 13, 1920
Primary view of Gasolene-Measuring Device.
McKallip, Jonathan C.
January 25, 1921
Primary view of Wrench.
Duda, Oswald
July 19, 1921
Primary view of Landing Device for Aeroplanes.
Martin, Ernest L.
September 7, 1920
Primary view of Indexing Device.
Moran, Stanley C.
January 18, 1921
Primary view of Liquid Coating Composition
McKay, Arthur N. & Willis, William L.
October 19, 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 Wall Construction
Needham, Edward F.
April 19, 1921
Primary view of Liquid Dispensing Machinemm
Ogden, Clayton N.
October 19, 1920
Primary view of Lubricating Oil Dispenser
Fenaes, Alfred R. & Kennedy, William H.
May 30, 1922
Primary view of Trowel.
Parker, Barton J.
March 2, 1920
Primary view of Well-Drilling Tool.
Reed, Clarence E.
January 31, 1922
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-Screen Cleaner.
Bashara, Samuel F.
June 7, 1921
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
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