Cutoff assembly for use at wellheads
United States Patent 3379255
US Patent References:
Hydraulic casing control head
- - 1802564
Pipe retainer for oil wells
- - 1802565
Control device for oil or gas wells
- - 1851894
Well control and safety valve mechanism
- - 1875673
Control device for oil or gas wells and pipe lines
- - 1949672
Hydraulic casing control head
- - 1802564
Pipe retainer for oil wells
- - 1802565
Control device for oil or gas wells
- - 1851894
Well control and safety valve mechanism
- - 1875673
Control device for oil or gas wells and pipe lines
- - 1949672
Inventors:
Burns Jr., Albert L.
Slator, Damon T.
Slator, Damon T.
Publication Date:
04/23/1968
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Export Citation:
Assignee:
BOWEN TOOLS INC
Primary Class:
Other Classes:
83/639.100
International Classes:
E21B29/08; E21B33/06; E21B29/00; E21B33/03
US Patent References: