TE KA DE Felten & Guilleaume Fernmeldeanlagen GmbH
Patent Owner
Stats
- 0 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Nov 18, 1986 most recent publication
Details
- 0 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 179 Total Citation Count
- Dec 08, 1977 Earliest Filing
- 22 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
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Recent Publications
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Recent Patents
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Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
4623980 Method of processing electrical signals by means of Fourier transformationsExpiredMar 08, 85Nov 18, 86[H03H]
4595796 Method of and a circuit arrangement for determining current criteria in the lines of a telephone systemExpiredSep 27, 82Jun 17, 86[H04M]
4539690 Automatic and adaptive digital nonlinear decision feedback equalizerExpiredApr 14, 82Sep 03, 85[H04B]
4525602 Method of and a circuit for energizing a subscriber's circuit in a telephone systemExpiredSep 27, 82Jun 25, 85[H04M]
4476561 Device for remotely supervising operation of a branched data-transmission networkExpiredMar 29, 82Oct 09, 84[G06F]
4432601 Apparatus and method for coupling and decoupling of optical fiber waveguidesExpiredFeb 17, 81Feb 21, 84[G02B]
4352110 Method for siting cosine-squared antennas and antenna array obtained therebyExpiredJun 02, 80Sep 28, 82[H01Q]
4348769 Circuitry for extraction of a transmission clock signal from-modulated data transmissionsExpiredFeb 19, 80Sep 07, 82[H03K]
4347601 Method and system for processing coded information transmitted during cyclically successive time framesExpiredSep 28, 79Aug 31, 82[H04Q, G06F]
4346367 Circuit for converting binary digital signals into pseudoternary A.C. pulsesExpiredNov 09, 79Aug 24, 82[H03K]
4329677 Signal-light systems, especially for a series of emergency-phone stations distributed along the length of a highway, or the likeExpiredJul 05, 79May 11, 82[G08B, H05B]
4264890 Blinking signal-light system, especially for a series of emergency-phone stations distributed along the length of a highway, or the likeExpiredJul 06, 79Apr 28, 81[H04B, G08G]
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