Means for installing and removing flow valves
United States Patent 2664162
US Patent References:
/0672097.html
- - 0672097

/0919792.html
- - 0919792

Oil pump
- - 1421629

Kick-off tool
- - 1527412

Standing valve inserter and puller
- - 1717497


Inventors:
Howard, Kenneth C.
Mcgowen Jr., Harold E.
Moore Jr., Howard H.
Publication Date:
12/29/1953
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Assignee:
SID W RICHARDSON INC
Primary Class:
417/109
Other Classes:
137/155, 417/454, 166/66.400, 417/313, 166/117.500, 137/215
International Classes:
E21B23/03; E21B23/00
US Patent References:
2061316Drill hole deflector
2230107Insertable and removable flow valves
2266344Coupling
2346248Means for flowing liquid from wells
2380669Well anchor
2401119Well tool
2447546Automatic shutoff apparatus for oil wells
2452920Method and apparatus for drilling and producing wells
Foreign References:
DE309616C