| http://www.w3.org/ns/prov#value | - However, traveling-plunger-type oil wells cannot use a gas release probe for practical reasons.There is thus a need for eliminating gas lock in traveling plunger-type oil well pumps in an efficient and inexpensive manner.SUMMARY OF THE INVENTIONIt is an object of this invention to provide an improved traveling plunger type oil well pump having a hydrostatic valve for eliminating gas lock.It is a f
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