Robert J. Campbell

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Suffolk, GB

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Patents Grantslast 30 patents

Information Patent Grant
Filter with preselected attenuation/wavelength characteristic
- Patent number 5,583,689
- Issue date Dec 10, 1996
- British Telecommunications Public Limited Company
- Stephen Cassidy
- G02 - OPTICS
Information Patent Grant
Optical memory
- Patent number 5,530,666
- Issue date Jun 25, 1996
- British Telecommunications, plc
- Raman Kashyap
- G02 - OPTICS
Information Patent Grant
Method of forming optical fibre gratings
- Patent number 5,384,884
- Issue date Jan 24, 1995
- British Telecommunications public limited company
- Raman Kashyap
- G02 - OPTICS