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Patents Grants
last 30 patents
Information
Patent Grant
Method of processing electrical signals by means of Fourier transfo...
Patent number
4,623,980
Issue date
Nov 18, 1986
Te Ka de Felten & Guilleaume Fernmeldeanlagen GmbH
Peter Vary
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information
Patent Grant
Method of and a circuit arrangement for determining current criteri...
Patent number
4,595,796
Issue date
Jun 17, 1986
Te Ka De Felten & Guilleaume Fernmeldeanlagen GmbH
Jorg Robra
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method of and a circuit for energizing a subscriber's circuit in a...
Patent number
4,525,602
Issue date
Jun 25, 1985
TE KA DE Felten & Guilleaume Fernmeldeanlagen GmbH
Joerg Robra
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Data transmission systems for full duplex communication
Patent number
4,514,840
Issue date
Apr 30, 1985
Te Ka de Felten & Guilleaume Fernmeldeanlagen GmbH
Edgar Bader
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Device for remotely supervising operation of a branched data-transm...
Patent number
4,476,561
Issue date
Oct 9, 1984
Te Ka de Felten & Guilleaume Fernmeldeanlagen GmbH
Dirk Baackmann
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Subscriber's line circuit for telecommunications networks
Patent number
4,433,213
Issue date
Feb 21, 1984
Te Ka de Felten & Guilleaume Fernmeldeanlagen GmbH
Raymund Albers
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Apparatus and method for coupling and decoupling of optical fiber w...
Patent number
4,432,601
Issue date
Feb 21, 1984
Te Ka de Felten & Guilleaume Fernmeldeanlagen GmbH
Lothar Mannschke
G02 - OPTICS
Information
Patent Grant
Electric switching device
Patent number
4,417,152
Issue date
Nov 22, 1983
Te Ka de Felten & Guilleaume Fernmeldeanlagen GmbH
Heinz Fleischmann
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Two-terminal-pair network simulating an inductance
Patent number
4,395,690
Issue date
Jul 26, 1983
Te Ka de Felten & Guilleaume Fernmeldeanlagen GmbH
Karl-Heinz Parras
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Circuitry for extraction of a transmission clock signal from-modula...
Patent number
4,348,769
Issue date
Sep 7, 1982
Te Ka de Felten & Guilleaume Fernmeldeanlagen GmbH
Ludwig Kittel
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and system for processing coded information transmitted duri...
Patent number
4,347,601
Issue date
Aug 31, 1982
Te Ka de Felten & Guilleaume Fernmeldeanlagen GmbH
Hans Schmidt
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Circuit for converting binary digital signals into pseudoternary A....
Patent number
4,346,367
Issue date
Aug 24, 1982
Te Ka de Felten & Guilleaume Fernmeldeanlagen GmbH
Walter Leinweber
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Signal-light systems, especially for a series of emergency-phone st...
Patent number
4,329,677
Issue date
May 11, 1982
Te Ka de Felten & Guilleaume Fernmeldeanlagen GmbH
Georg Markl
G08 - SIGNALLING
Information
Patent Grant
Adaptive delta-modulation network
Patent number
4,287,595
Issue date
Sep 1, 1981
Te Ka de Felten & Guilleaume Fernmeldeanlagen GmbH
Charles Meyers
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Loopback test for data transmission paths
Patent number
4,271,514
Issue date
Jun 2, 1981
Te Ka De, Felten & Guilleaume, Fernmeldeanlagen GmbH
Karlheinz Parras
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Testing system for data transmission paths
Patent number
4,247,934
Issue date
Jan 27, 1981
Te Ka de Felten & Guilleaume Fernmeldeanlagen GmbH
Karlheinz Parras
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Universal equalizer
Patent number
4,243,957
Issue date
Jan 6, 1981
Te Ka de Felten & Guilleaume Fernmeldeanlagen GmbH
Hans-Joachim Schmidt
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Adaptive delta-modulation system
Patent number
4,215,311
Issue date
Jul 29, 1980
Te Ka de Felten & Guilleaume Fernmeldeanlagen GmbH
Ludwig Kittel
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Circuit arrangement for mutually decoupled connecting of plural tra...
Patent number
4,148,038
Issue date
Apr 3, 1979
Tekade Felten & Guilleaume Fernmeldeanlagen GmbH
Dirk J. Braak
H01 - BASIC ELECTRIC ELEMENTS
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last 30 patents
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