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Whiffletree
Patent for a whiffletree. Illustration included.
Date:
December 10, 1912
Creator:
Jackson, Oliver S.
System:
The Portal to Texas History
Rod-Puller.
Patent for a rod puller and "relates to a lifting device for pump-tubing, drill-rods, and the equivalents thereof" (lines 8-10).
Date:
June 10, 1913
Creator:
Hooker, James H.
System:
The Portal to Texas History