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Peter Yennadhiou
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Ipswich, GB
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last 30 patents
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Patent Grant
Wavelength selective optical waveguide coupler
Patent number
5,166,992
Issue date
Nov 24, 1992
British Telecommunications public limited company
Stephen A. Cassidy
G02 - OPTICS
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Patent Grant
Optical switch using directionally flexible optical fibres
Patent number
4,976,505
Issue date
Dec 11, 1990
British Telecommunications Public Limited Company
Stephen A. Cassidy
G02 - OPTICS