Joseph A. Roy

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Danvers, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Arc discharge lamp having improved lumen maintenance
- Patent number 4,639,637
- Issue date Jan 27, 1987
- GTE Products Corporation
- Fred R. Taubner
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Fluorescent lamp having double phosphor layer
- Patent number 4,431,941
- Issue date Feb 14, 1984
- GTE Products Corporation
- Joseph A. Roy
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Mercury dispenser for discharge lamps
- Patent number 4,335,326
- Issue date Jun 15, 1982
- GTE Products Corporation
- Frank M. Latassa
- H01 - BASIC ELECTRIC ELEMENTS