Resource Type
Counties
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Spring
Patent for a spring "wherein all of the parts are removably connected to each other so as to be convenient and inexpensive to repair." (Line 11-14)
Date:
November 3, 1914
Creator:
Avera, Lawrence A.
System:
The Portal to Texas History
Speed-Operated Circuit-Closer.
Patent for an alarm trigger or stopping device on belt driven grain elevators.
Date:
July 3, 1919
Creator:
Touchy, Frank Earl
System:
The Portal to Texas History