David H. Johnston

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Celebration, FL, US

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Patents Grantslast 30 patents

Information Patent Grant
Extendable channel unit containing a conductor
- Patent number 7,183,502
- Issue date Feb 27, 2007
- David H. Johnston
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Extendable channel unit containing a conductor
- Patent number 7,034,221
- Issue date Apr 25, 2006
- David H. Johnston
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
Extendable channel unit containing a conductor
- Publication number 20050011657
- Publication date Jan 20, 2005
- David H. Johnston
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER