Duane M. Johnson

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Pensacola, FL, US

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Patents Grantslast 30 patents

Information Patent Grant
Fan disabling device
- Patent number 7,481,261
- Issue date Jan 27, 2009
- Keith E. Johnson
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Apparatus for detecting and preventing chemical or biological conta...
- Patent number 6,583,726
- Issue date Jun 24, 2003
- Vent-Defense, LLC
- Duane M. Johnson
- F24 - HEATING RANGES VENTILATING

Patents Applicationslast 30 patents

Information Patent Application
Siren detection notification alarm
- Publication number 20070008175
- Publication date Jan 11, 2007
- Duane Johnson
- G08 - SIGNALLING
Information Patent Application
Fan disabling device
- Publication number 20060219382
- Publication date Oct 5, 2006
- Keith E. Johnson
- B60 - VEHICLES IN GENERAL