U N T Established 1890 U N T
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Start Over Resource Type Patent Counties Clay County, TX Decade 1910-1919 Day 10th

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Results: 1 - 2 of 2
Best Match Title Creator Date Created (Newest) Date Created (Oldest) Date Added (Newest) Date Added (Oldest)
Underreamer (open access)

Underreamer

Patent for an under-reamer for use in drilling oil wells.
Date: September 10, 1912
Creator: Wagner, Warren
System: The Portal to Texas History
Shut-Off Head for Casings and The Like (open access)

Shut-Off Head for Casings and The Like

Patent for a shut-off head for casings in oil wells.
Date: September 10, 1912
Creator: Wagner, Warren
System: The Portal to Texas History