Resource Type
Counties
2 Matching Results
Results open in a new window/tab.
Results:
1 - 2 of
2
Bailer.
Patent for improved bailer for deep wells (e.g., oil wells), cheaper to use and manufacture, with a better delivery gate and improved method for triggering gate closure upon bailer withdrawal.
Date:
July 26, 1921
Creator:
Swartz, Ira
System:
The Portal to Texas History
Rail-Joint.
Patent for an improved rail joint that utilizes an interlocking system, thus eliminating the need for connections using nuts and bolts, resulting in a smoother, continuous rail.
Date:
July 17, 1917
Creator:
Luker, Luther V.
System:
The Portal to Texas History