Clamp.
Description:
Patent for a clamp "for use in in connection with hoisting-tackle for raising or lowering well-pipes..."(lines 9-10) that has one side attach to the pipe and the other side be releasable from the pipe.
Date:
April 9, 1907
Creator:
Danforth, Joseph B.
Item Type:
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Patent
Partner:
UNT Libraries Government Documents Department