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Primary view of Well-Drilling Machine.
Bradshaw, Albert Cidney
February 22, 1921
Primary view of Record-Printing Device.
Gray, Dexter B.
March 22, 1921
Primary view of Tractor
Aerl, Van Vivian
March 22, 1921
Primary view of Process of Forming Individual Foot-Forms and Fitting Shoes Thereon.
Butler, James B.
March 22, 1921
Primary view of Tool Joint.
Kreiter, Richard F.
March 22, 1921
Primary view of Washboiler
Patterson, Thomas Allison.
February 22, 1921
Primary view of Internal-Combustion Motor.
Sanford, Harold M.
March 22, 1921
Primary view of Oil Trap
Jones, Robert P.
November 22, 1921
Primary view of Maternity and Invalid Chair.
Read, Edwin T. & Bartz, Adolph J.
March 22, 1921
Primary view of Pipe and Like Stem.
Crossman, Alvin Amos
February 22, 1921
Primary view of Pencil-Sharpener.
Scougale, Malcolm
March 22, 1921
Primary view of Hydraulic Swivel.
Black, Lee J.
March 22, 1921
Primary view of Piston for Deep Well Pumps
Humason, Granville A.; Bashara, Sam F. & Barraco, Paul J.
February 22, 1921
Primary view of Strain Jacket for Telephone Poles
McKnight, William M.
February 22, 1921
Primary view of Screen Fastener
McCaffrey, Horace
February 22, 1921
Primary view of Pump-Piston.
Yount, Miles F.
March 22, 1921
Primary view of Automobile Signal
Ziegenbalg, Emil
February 22, 1921
Primary view of Clothes-Rack
Wells, Lillie Bell
March 22, 1921
Primary view of Clutch and Transmission Device
Hubbard, Adra M.
February 22, 1921
Primary view of Dredge.
Evans, Marvin
November 22, 1921
Primary view of Spring Wheel.
Livings, James Arthur
November 22, 1921
Primary view of Roller-Distributer.
Lopez, Jesus M.
March 22, 1921
Primary view of Stock Feeder
Dierks, John
November 22, 1921
Primary view of Fur-Stretcher.
Aylor, James C.
March 22, 1921
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