William J. Kerwin

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Tucson, AZ, US

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Patents Grantslast 30 patents

Information Patent Grant
Transformerless high voltage inverter using a fourth-order impedanc...
- Patent number 6,343,027
- Issue date Jan 29, 2002
- Durel Corporation
- William J. Kerwin
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Automatic voltage imbalance detector
- Patent number 4,424,491
- Issue date Jan 3, 1984
- The United States of America as represented by the United States Department o...
- Ronald E. Bobbett
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Pressure relief valve with pressure indicating means
- Patent number 4,232,698
- Issue date Nov 11, 1980
- Products of Advanced Technology, Inc.
- Craig Hosterman
- F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information Patent Grant
High temperature electronic gain device
- Patent number 4,138,622
- Issue date Feb 6, 1979
- The United States of America as represented by the United States Department o...
- J. Byron McCormick
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Integrated structure vacuum tube
- Patent number 3,978,364
- Issue date Aug 31, 1976
- The United States of America as represented by the administrator of the Natio...
- John Dimeff
- H01 - BASIC ELECTRIC ELEMENTS