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Title:
Sucker rod coupling
United States Patent 3168340
Inventors:
Howard, William E.
Application Number:
US8183261A
Publication Date:
02/02/1965
Filing Date:
01/10/1961
Assignee:
Howard, William E.
Primary Class:
Other Classes:
285/84, 285/347, 285/376, 403/8, 403/326, 403/343
International Classes:
E21B17/046
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