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Optical amplifier and laser
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Patent number 5,453,873
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Issue date Sep 26, 1995
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British Telecommunications public limited company
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Colin A. Millar
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H01 - BASIC ELECTRIC ELEMENTS
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Laser and an amplifier
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Patent number 5,383,197
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Issue date Jan 17, 1995
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British Telecommunications public limited company
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Colin A Millar
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H01 - BASIC ELECTRIC ELEMENTS
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Optical amplifier and laser
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Patent number 5,369,523
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Issue date Nov 29, 1994
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British Telecommunications public limited company
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Colin A. Millar
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H01 - BASIC ELECTRIC ELEMENTS
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Laser amplifier
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Patent number 5,224,116
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Issue date Jun 29, 1993
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BT&D Technologies Ltd.
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Timothy J. Whitley
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H01 - BASIC ELECTRIC ELEMENTS
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Laser systems
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Patent number 5,157,683
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Issue date Oct 20, 1992
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British Telecommunications p.l.c.
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Colin A. Millar
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H01 - BASIC ELECTRIC ELEMENTS
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Optical device
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Patent number 4,881,791
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Issue date Nov 21, 1989
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British Telecommunications public limited company
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Stephen R. Mallinson
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G02 - OPTICS
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Optical coupler
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Patent number 4,869,567
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Issue date Sep 26, 1989
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British Telecommunications Public Limited Company
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Colin A. Millar
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G02 - OPTICS
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Endface assessment
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Patent number 4,620,789
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Issue date Nov 4, 1986
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British Telecommunications plc
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Colin A. Millar
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G01 - MEASURING TESTING