GEC-MARCONI LIMITED, THE GROVE,

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7259713 Ranging systemsExpiredAug 16, 90Aug 21, 07[G01S]
6628228 Ranging system beam steeringExpiredAug 16, 90Sep 30, 03[G01S]
5164848 Helmet mounted displayExpiredOct 26, 90Nov 17, 92[G02B]
5081693 Thermal imager arrangementsExpiredOct 05, 89Jan 14, 92[G06K]
4958895 Optical waveguidesExpiredJun 23, 89Sep 25, 90[G02B]
4952018 Optical in line filtersExpiredFeb 23, 89Aug 28, 90[G02B]

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