Roger A. Johnson

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Grafton, NH, US

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Patents Grantslast 30 patents

Information Patent Grant
Lamp assembly utilizing shield and ceramic fiber mesh for containment
- Patent number 4,942,330
- Issue date Jul 17, 1990
- GTE Products Corporation
- Robert J. Karlotski
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electrode feedthrough assembly for arc discharge lamp
- Patent number 4,804,889
- Issue date Feb 14, 1989
- GTE Products Corporation
- David A. Reid
- H01 - BASIC ELECTRIC ELEMENTS