Jason R. Johnson

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Spokane, WA, US

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Patents Grantslast 30 patents

Information Patent Grant
Electronic hand held ion measurement device and method
- Patent number 8,463,558
- Issue date Jun 11, 2013
- James R. Johnson
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
ELECTRONIC HAND HELD ION MEASUREMENT DEVICE AND METHOD
- Publication number 20110118988
- Publication date May 19, 2011
- James R. Johnson
- G01 - MEASURING TESTING
Information Patent Application
GEOTHERMAL HYBRID HEAT EXCHANGE SYSTEM
- Publication number 20100038052
- Publication date Feb 18, 2010
- James R. Johnson
- F24 - HEATING RANGES VENTILATING