Tom Henderson

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Taft, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Pressure compensated stuffing box for reciprocating pumping units
- Patent number 6,394,461
- Issue date May 28, 2002
- Tom Henderson
- E21 - EARTH DRILLING MINING
Information Patent Grant
Self-closing gate valve system and external self-closing actuator m...
- Patent number 5,343,884
- Issue date Sep 6, 1994
- Tom Henderson
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Environmental leakage protector for recirocating rod fluid displace...
- Patent number 4,951,743
- Issue date Aug 28, 1990
- Tom Henderson
- E21 - EARTH DRILLING MINING
Information Patent Grant
In-casing hydraulic jack system
- Patent number 4,745,969
- Issue date May 24, 1988
- Tom Henderson
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Oil well sub-surface pump stroke extender
- Patent number 4,653,383
- Issue date Mar 31, 1987
- Tom Henderson
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...