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Sucker rod and coupling therefor |
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Feb 23 1981 |
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Fiberglass oil well sucker rod |
4475839, |
Apr 07 1983 |
Park-Ohio Industries, Inc. |
Sucker rod fitting |
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Sep 30 1981 |
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Aug 13 1982 |
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Sucker rod construction |
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Jun 16 1986 |
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Packing tube assembly for pumping wells |
4787771, |
Apr 08 1986 |
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Loaded sucker rod fitting |
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Nov 26 1985 |
AZERBAIDZHANSKY NAUCHNO-ISSLEDOVATELSKY I PROEKTNO-KONSTRUKTORSKY INSTITUT NEFTYANOGO MASHINOSTROENIA, SOVIET UNION |
Method for making sucker rods |
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Oct 26 1987 |
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Oil well sucker rod |
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Apr 13 1995 |
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Downhole stress absorber |
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Sep 02 1993 |
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Aug 22 1996 |
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Apr 26 1999 |
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Percussive drilling apparatus |
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Sep 24 1997 |
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Feb 11 1999 |
Delaware Capital Formation, Inc |
Wear resistant well pump rod and method for making same |
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Apr 30 2001 |
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Method and apparatus for reducing paraffin and asphaltene deposits in pumping oil wells |
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Aug 14 2006 |
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Interconnect rod for sucker rod string |
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Jun 08 2010 |
S.P.M. Flow Control, Inc. |
Stay rod for reciprocating pump |
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Apr 01 1987 |
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Fiberglass sucker rod construction |