Title:
Combination shearing and shut-off ram
United States Patent 2969838


Inventors:
Wilde, Arthur E.
Application Number:
US59962056A
Publication Date:
01/31/1961
Filing Date:
07/23/1956
Assignee:
SHAFFER TOOL WORKS
Primary Class:
Other Classes:
166/97.1, 166/319
International Classes:
E21B29/08; E21B33/06
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