Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Henrich Franzen, Leif MellstroemfiledCriticalHenrich Franzen
Priority to SE0004742ApriorityCriticalpatent/SE523458C2/sv
Publication of SE0004742D0publicationCriticalpatent/SE0004742D0/sv
Publication of SE0004742LpublicationCriticalpatent/SE0004742L/sv
Publication of SE523458C2publicationCriticalpatent/SE523458C2/sv
H04M1/00—Substation equipment, e.g. for use by subscribers
H04M1/738—Interface circuits for coupling substations to external telephone lines
H04M1/74—Interface circuits for coupling substations to external telephone lines with means for reducing interference; with means for reducing effects due to line faults
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04B—TRANSMISSION
H04B3/00—Line transmission systems
H04B3/02—Details
H04B3/28—Reducing interference caused by currents induced in cable sheathing or armouring
SE0004742A2000-12-212000-12-21Anordning för samtidig och selektiv överföring av signaler med olika frekvenser
SE523458C2
(sv)