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Pipe-Grapple.
Patent for an improved pipe gripping mechanism which engages the interior of a pipe or tube.
Date:
June 30, 1914
Creator:
Martin, John E.
System:
The Portal to Texas History
Display Cabinet
Patent for display cabinet. The invention consists of outer and inner casings that are accessible via door. Illustrations included.
Date:
May 30, 1911
Creator:
Smith, Ernest & Nelson, Axel
System:
The Portal to Texas History