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Method of Sealing the Walls of Deep Wells
Patent for a new and useful method of dealing the walls of deep wells in which the means for lining oil wells by the use of the customary metal casing is avoided, the cost is very materially reduced, and numerous expenses and failures are avoided.
Date:
November 29, 1921
Creator:
Nolan, William E.
System:
The Portal to Texas History
Cycle-Car
Patent for a cycle car that can be steered and propelled by hands only and can be used with ordinary bicycles.
Date:
November 29, 1921
Creator:
{Payne, Luther M.}; {Miller, Lee A.} & {Douglas, John J.}
System:
The Portal to Texas History
Nut-Lock
Patent for a nut lock. Illustrations included.
Date:
October 29, 1912
Creator:
Patterson, Benjamin Gilbert
System:
The Portal to Texas History