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Design for Sash-Holder.
Patent for "the design [of] a sash or window-frame fastener" (lines 28-30).
Date:
April 10, 1877
Creator:
Overton, Thomas
System:
The Portal to Texas History
Improvement in Chair-Backs.
Patent for chair back.
Date:
March 10, 1874
Creator:
Perrenet, George F.
System:
The Portal to Texas History
Triple Valve for Fluid-Pressure Brakes.
Patent for a triple valve for fluid-pressure brakes in trains that prevents accidental triggering of the emergency brakes.
Date:
October 10, 1911
Creator:
Robinson, John W. & Douglas, Frank L.
System:
The Portal to Texas History