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Primary view of Spark-Plug
Hill, John L.
September 2, 1919
Primary view of Window-Shade-Operation-Lever.
Lee, William
March 18, 1919
Primary view of Speed-Operated Circuit-Closer.
Touchy, Frank Earl
July 3, 1919
Primary view of Pump.
Haszinger, George Ernest
November 11, 1919
Primary view of Net-Frame.
Franklin, Robert M.
January 14, 1919
Primary view of Winch Attachment
Bush, E. E.
April 22, 1919
Primary view of Shell.
Aoughsten, Richard G. & Aoughsten, Otto L.
April 29, 1919
Primary view of Automatic Firing Device for Explosive Shells.
McCombs, Orville K.
January 7, 1919
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