Title:
Blowout preventer
United States Patent 3272222


Inventors:
Herbert, Allen
Application Number:
US31928463A
Publication Date:
09/13/1966
Filing Date:
10/28/1963
Assignee:
CAMERON IRON WORKS INC
Primary Class:
Other Classes:
251/1.3, 277/323, 277/325
International Classes:
E21B33/06
View Patent Images:
US Patent References:
2912214Blowout preventer1959-11-10
2752119Blowout preventer1956-06-26
2387106Blowout preventer1945-10-16