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Check-Valve

Description: Patent for a valve used for well drilling designed to be confine fluid around the pipe. Illustrations included.
Date: September 28, 1909
Creator: Kreiter, Richard F.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Well Mechanism

Description: Patent for a well mechanism that provides a coupling with strong, tight joints for the other parts of the mechanism. Illustrations included.
Date: January 26, 1909
Creator: Layne, Mahlon E.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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