SIEMENS PLESSEY ELECTRONIC SYSTEMS LIMITED
Patent Owner
Stats
- 0 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Apr 21, 1992 most recent publication
Details
- 0 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 786 Total Citation Count
- Nov 02, 1978 Earliest Filing
- 31 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
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Recent Publications
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Recent Patents
- No Recent Patents to Display
Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
5021758 Circuit arrangement comprising MESFET switched spiral inductorExpiredDec 06, 88Jun 04, 91[H03H]
4815072 Switching arrangements for digital telecommunications exchange systemsExpiredMar 28, 86Mar 21, 89[H04J]
4754274 Microprocessor interface device for use in a telecommunications systemExpiredNov 27, 85Jun 28, 88[H04Q, H04J]
4737954 Subscriber line signalling device for use in a telecommunications systemExpiredNov 27, 85Apr 12, 88[H04J]
4731869 Target tracking transmitter having two levels of power operationExpiredFeb 18, 86Mar 15, 88[H03B]
4486831 Multi-programming data processing system process suspensionExpiredSep 29, 80Dec 04, 84[G06F]
4395685 Waveguide junction for producing circularly polarized signalExpiredMay 01, 81Jul 26, 83[H01P]
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