STANDARD TELEPHONES AND CABLES PUBLIC LIMITED COMPANY

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5156376 Laying cablesExpiredJul 18, 91Oct 20, 92[A61M]
4928319 Method and arrangement for transmitting power in optical form over optical fibresExpiredMar 24, 89May 22, 90[H04B]
4866097 Controlled release systemExpiredSep 06, 84Sep 12, 89[A61M]
4824690 Pulsed plasma process for treating a substrateExpiredNov 03, 87Apr 25, 89[B05D]
4812150 Metallic-glass coated optical fibresExpiredFeb 24, 87Mar 14, 89[C03B]
4799213 Data transmission systemExpiredSep 07, 84Jan 17, 89[H04J]
4793997 Controlled delivery deviceExpiredJun 29, 87Dec 27, 88[A61K, A01N]
4767182 Submarine cableExpiredDec 14, 87Aug 30, 88[G02B]
4761831 Optical repeatersExpiredOct 17, 86Aug 02, 88[H04B]
4736120 Timing extraction circuitExpiredDec 10, 84Apr 05, 88[H03K, H03B]
4728170 Single mode optical fibre attenuatorsExpiredApr 17, 85Mar 01, 88[G02B]
4720684 Optical amplifierExpiredJul 22, 86Jan 19, 88[H07F, H04B]
4717236 Optical fiber cable having a hydrogen-absorbing zeoliteExpiredMay 08, 85Jan 05, 88[G02B]
4717443 Mass transport of indium phosphideExpiredMay 20, 85Jan 05, 88[C30B]
4712065 Magnetic field sensors, in particular optical fiber magnetometersExpiredFeb 20, 86Dec 08, 87[G02B, G01R, G02F]
4707826 Circuit and packet data transmission systemExpiredJun 27, 85Nov 17, 87[H04Q]
4702619 Temperature sensorsExpiredDec 12, 85Oct 27, 87[G01K, G01D]
4701029 Laser addressed smectic displaysExpiredJul 10, 85Oct 20, 87[G02F]
4701879 Associative memory systemsExpiredJun 24, 85Oct 20, 87[G11C]
D292096 Portable radio pagerExpiredFeb 28, 85Sep 29, 87[]

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