Joel R. Johnson

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Peoria, AZ, US

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Patents Grantslast 30 patents

Information Patent Grant
Indirect and direct evaporative cooling system
- Patent number 5,664,433
- Issue date Sep 9, 1997
- Davis Energy Group, Inc.
- Richard C. Bourne
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Wall mounted heater with plug mount and support
- Patent number 4,873,422
- Issue date Oct 10, 1989
- Arvin Industries, Inc.
- Herbert K. Streich
- F24 - HEATING RANGES VENTILATING