Robert J. Spreadbury

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Franklin Township, Westmoreland County, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Starting and operating method and apparatus for discharge lamps
- Patent number 4,525,650
- Issue date Jun 25, 1985
- North American Philips Lighting Corporation
- John M. Hicks
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Ballast modifying device and lead-type ballast for programming and...
- Patent number 4,501,994
- Issue date Feb 26, 1985
- Cooper Industries, Inc.
- Robert J. Spreadbury
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Packaged add-on device for lead-type ballast and luminaire which in...
- Patent number 4,455,595
- Issue date Jun 19, 1984
- Westinghouse Electric Corporation
- Joseph C. Engel
- F21 - LIGHTING
Information Patent Grant
Discharge device ballast component which provides both voltage tran...
- Patent number 4,350,934
- Issue date Sep 21, 1982
- Westinghouse Electric Corp.
- Robert J. Spreadbury
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Inductive coupler
- Patent number 4,030,058
- Issue date Jun 14, 1977
- Westinghouse Electric Corporation
- Delmar R. Riffe
- H01 - BASIC ELECTRIC ELEMENTS