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Primary view of Valve-Grinder.
Ralston, John
July 13, 1920
Primary view of Treasure Box.
Hayes, Elbert Newton & Sauer, Venant August
July 13, 1886
Primary view of Pneumatic Tire.
Church, Shelby L.
July 13, 1920
Primary view of Rotary Engine
Nichols, Franklin P.
July 13, 1909
Primary view of Power-Transmitting Mechanism.
Smith, Robert W. J.
July 13, 1920
Primary view of Canopy-Frame.
Johnston, Washington T.
July 13, 1901
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