Oil well cellar bracing bracket
United States Patent 2706004
US Patent References:
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/1142246.html
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Inventors:
Katzenmaier, Henry K.
Publication Date:
04/12/1955
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Assignee:
Katzenmaier, Henry K.
Primary Class:
166/75.110
Other Classes:
248/354.100
International Classes:
E21B41/00
US Patent References:
2584022Surface pipe bracing and centering means