Title:
Laterally adjustable blowout preventer with inflatable rams
United States Patent 2850256


Inventors:
Crookston, Robert R.
Bolling Jr., Thomas J.
Application Number:
US54606855A
Publication Date:
09/02/1958
Filing Date:
11/10/1955
Assignee:
JERSEY PROD RES CO
Primary Class:
Other Classes:
92/92, 92/117R, 166/97.1, 251/1.2, 251/1.3, 251/11, 251/175, 277/332
International Classes:
E21B33/06
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