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Adjustable Friction-Grab for Fishing-Tools.
Patent for friction grabs for fishing tools in well drilling operations that can be "easily adjusted for different sized holes or wells and which will be automatically adjusted and the grabs automatically closed on the object to be removed" (lines 14-17).
Date:
May 24, 1921
Creator:
Dickson, Lawrence E.
System:
The Portal to Texas History
Display-Stand.
Patent for incorporating vertical shaft in display stands for posters advertising motion pictures and merchandise, with illustrations.
Date:
June 23, 1921
Creator:
Gates, Norwood
System:
The Portal to Texas History