T. Frank Knight

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Owasso, OK, US

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Patents Grantslast 30 patents

Information Patent Grant
Method of anticipating potential HVAC failure
- Patent number 5,729,474
- Issue date Mar 17, 1998
- Excel Energy Technologies, Ltd.
- Paul N. Hildebrand
- G05 - CONTROLLING REGULATING
Information Patent Grant
Energy utilization controller and control system and method
- Patent number 5,640,153
- Issue date Jun 17, 1997
- Excel Energy Technologies, Ltd.
- Paul N. Hildebrand
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Temperature control method and apparatus
- Patent number 5,539,633
- Issue date Jul 23, 1996
- Excel Energy Technologies, Ltd.
- Paul N. Hildebrand
- G05 - CONTROLLING REGULATING