Title:
Blowout preventer
United States Patent 2752119


Inventors:
Herbert, Allen
WORKS MADDEN T
Oliver, John P.
Application Number:
US27824352A
Publication Date:
06/26/1956
Filing Date:
03/24/1952
Assignee:
CAMERON IRON WORKS INC
Primary Class:
Other Classes:
92/165R, 137/327, 277/325
International Classes:
E21B33/06
View Patent Images:
US Patent References:
2387106Blowout preventer1945-10-16
2322269Blowout preventer1943-06-22
2212036Union for well heads1940-08-20
2194255Blowout preventer1940-03-19
1891570Twin pressure valve1932-12-20
Foreign References:
GB537625A1941-06-30