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Primary view of Wall Construction
Needham, Edward F.
April 19, 1921
Primary view of Well-Packer.
Fletcher, Harold W.
April 13, 1920
Primary view of Spear
Gray, Ellsworth
April 20, 1920
Primary view of Pump
Scott, Floyd L.
April 23, 1920
Primary view of Pump.
Carden, David A.
April 13, 1920
Primary view of Plunger For Deep-Well Pumps
Coulson, William J.
April 20, 1920
Primary view of Nut Locking Device.
Hales, Wiley J.
April 6, 1920
Primary view of Means for Detachably Securing Chairs to Floors.
Lambert, Joseph A.
April 6, 1920
Primary view of Pipe-Wrench.
Nixon, Jeddy D.
April 27, 1920
Primary view of Tire-Tool.
Boone, Daniel M.
April 26, 1921
Primary view of Washing-Machine
Seifert, John W.
April 5, 1921
Primary view of Single-Trigger Mechanism for Double-Barrel Guns.
Lindsay, Charles W.
April 26, 1921
Primary view of Washing-Machine
Seifert, John W.
April 19, 1921
Primary view of Device for Taking Samples from Wells.
Dodds, Redus D.
April 6, 1920
Primary view of Testing Device.
Harpst, Frederick E.
April 13, 1920
Primary view of Sample-Taking Device
Dodds, Redus D.
April 5, 1921
Primary view of Concrete Building Mold.
Rossiter, Jay A
April 19, 1921
Primary view of Calipers.
Miller, William James
April 4, 1922
Primary view of Wrench
Reed, Clarence E.
April 11, 1922
Primary view of Process of Distilling Hydrocarbons
Averill, Willard C., Jr.
April 19, 1921
Primary view of Grapple for Oil-Wells and the Like.
Reed, Clarence E.
April 19, 1921
Primary view of Photoprinter.
Lockhart, William E.
April 11, 1922
Primary view of Attachment for Internal Combustion Motors
Shine, John
April 26, 1921
Primary view of Reamer.
Humason, Granville A.
April 19, 1921
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