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Application filed by T Hjelm, L Lindblad, U Tinglof, Renstrom G OfiledCriticalT Hjelm
Priority to SE7200902ApriorityCriticalpatent/SE373716B/sv
Publication of SE373716BpublicationCriticalpatent/SE373716B/sv
H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
H04M11/04—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems
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Engineering & Computer Science
(AREA)
Signal Processing
(AREA)
SE7200902A1972-01-271972-01-27Anordning i ett kommunikationssystem som innefattar en forsta station och en andra station
SE373716B
(sv)