Johnny James Clark

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Maryville, TN, US

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Patents Grantslast 30 patents

Information Patent Grant
Oil filtration system for plural phase power equipment tanks
- Patent number 7,409,849
- Issue date Aug 12, 2008
- Filmax, Inc.
- David McMahon Butler
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Insulating oil leak containment
- Patent number 6,476,723
- Issue date Nov 5, 2002
- Filmax, Inc.
- David C. Campbell
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Temperature monitor for electrical switchgear
- Patent number 6,052,060
- Issue date Apr 18, 2000
- Filmax, Inc.
- David McMahan Butler
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Transformer leak alarm
- Patent number 5,691,706
- Issue date Nov 25, 1997
- Filmax, Inc.
- David McMahan Butler
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
Fluid filter and method of construction
- Publication number 20110005995
- Publication date Jan 13, 2011
- Filmax, Inc.
- David McMahon Butler
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Oil filtration system for plural phase power equipment tanks
- Publication number 20080295904
- Publication date Dec 4, 2008
- Filmax, Inc.
- David McMahon Butler
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Oil filtration system for plural phase power equipment tanks
- Publication number 20050109076
- Publication date May 26, 2005
- Filmax, Inc.
- David McMahon Butler
- H01 - BASIC ELECTRIC ELEMENTS