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Primary view of Scaffold-Jack.
Schwilling, Jacob
March 16, 1909
Primary view of Rail Fastener
Wessel, Frederick
March 16, 1911
Primary view of Rotary Boring Drill
Hughes, Howard R.
March 16, 1915
Primary view of Door-Stop.
Snowden, Rene Ravenel
March 16, 1909
Primary view of Wire Stretching Device for Fence Posts.
Priday, Henry
March 16, 1886
Primary view of Automatic Fire-Alarm System.
Ammons, John Burck; Ammons, Evander & McGaffey, Otis
March 16, 1915
Primary view of Fire-Alarm System.
Ammons, John B.
March 16, 1915
Primary view of Signal-Light.
Thomas, Theodore G.
March 16, 1920
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