Douglas Ketchum

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Rockaway, NJ, US

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Patents Grantslast 30 patents

Information Patent Grant
Efficient large area multi-channel flat fluorescent lamp
- Patent number 5,343,115
- Issue date Aug 30, 1994
- Thomas Electronics Incorporated
- Munisamy Anandan
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Thick-film integrated flat fluorescent lamp
- Patent number 4,978,888
- Issue date Dec 18, 1990
- Thomas Electronics Incorporated
- Munisamy Anandan
- G02 - OPTICS