Well-Liner Clamp.
Description:
Patent for a well-liner clamp for oil, gas, and other similar wells that prevents the well from caving in. The well-liner clamp is made of resilient material to hold in place, contracts while being placed into the well, and can be released after being placed into the well to expand to fit the walls of the well.
Date:
May 31, 1921
Creator:
Bigelow, Robert J.
Item Type:
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