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Tool-Joint.
Patent for improvements in a tool joint that has been adapted to connect sections of a drill used in drilling wells.
Date:
June 29, 1920
Creator:
Stafford, George A. & Stafford, Roy M.
System:
The Portal to Texas History
Specification of Letters Patent.
Patent for improvements in the seals for well screens to provide a permanent joint or seal between the screen and the casing with out blocking passage.
Date:
June 21, 1921
Creator:
Thomson, Alexander
System:
The Portal to Texas History
Pipe-Puller.
Patent for improvements in pipe pullers that grips the pipe and cuts the same time it is pulled.
Date:
June 20, 1920
Creator:
Robichaux, Sosthene & Paggi, Charles
System:
The Portal to Texas History