Blowout closure device pressure head
United States Patent 2897895
US Patent References:
Automatic blow-out preventer
- - 1455731
Pipe retainer for oil wells
- - 1802565
Pipe joint
- - 2462348
Method of repairing old pipe lines
- - 2522171
Method of controlling wells
- - 2552901
Automatic blow-out preventer
- - 1455731
Pipe retainer for oil wells
- - 1802565
Pipe joint
- - 2462348
Method of repairing old pipe lines
- - 2522171
Method of controlling wells
- - 2552901
Inventors:
Ortloff, John E.
Publication Date:
08/04/1959
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Export Citation:
Assignee:
JERSEY PROD RES CO
Primary Class:
Other Classes:
285/10, 166/75.140, 285/123.110, 285/308, 285/920
International Classes:
E21B33/04; E21B33/043; E21B33/06; E21B33/03
US Patent References:
| 2692066 | Quick mounting and demountable pressure head |