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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
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