Leonard J. Ketelsen

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Fanwood, NJ, US

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Patents Grantslast 30 patents

Information Patent Grant
Analog optical fiber communication system, and laser adapted for us...
- Patent number 5,111,475
- Issue date May 5, 1992
- AT&T Bell Laboratories
- David A. Ackerman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Phase shifted distributed feedback laser
- Patent number 5,052,015
- Issue date Sep 24, 1991
- AT&T Bell Laboratories
- David A. Ackerman
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Analog optical fiber communication system, and laser adapted for us...
- Patent number 5,012,484
- Issue date Apr 30, 1991
- AT&T Bell Laboratories
- Edward J. Flynn
- H04 - ELECTRIC COMMUNICATION TECHNIQUE