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Fan Spring-Motor
Patent for a portable fan spring motor.
Date:
January 28, 1913
Creator:
Von Hohenstein, Charles H.
System:
The Portal to Texas History
Improvement to Lifting-Jacks
Patent for the improvement of the lifting jack which allows the user to "lower the lifting bar by a step-by-step movement as well as to elevate the lifting bar by such a movement (lines 12-14). Includes instructions and illustration."
Date:
January 12, 1915
Creator:
Parker, Charles W. & Wittliff, Theodore H.
System:
The Portal to Texas History