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Filing date
Publication date
Application filed by Kirks K Telefonfab Af 1970 AsfiledCriticalKirks K Telefonfab Af 1970 As
Priority to DK73668ApriorityCriticalpatent/DK121241B/da
Priority to BE728587Dprioritypatent/BE728587A/xx
Priority to CH278269Aprioritypatent/CH488366A/de
Priority to DE19691909225prioritypatent/DE1909225B2/de
Publication of DK121241BpublicationCriticalpatent/DK121241B/da
H04M3/42—Systems providing special services or facilities to subscribers
H04M3/58—Arrangements for transferring received calls from one subscriber to another; Arrangements affording interim conversations between either the calling or the called party and a third party
Landscapes
Engineering & Computer Science
(AREA)
Signal Processing
(AREA)
Interface Circuits In Exchanges
(AREA)
DK73668A1968-02-231968-02-23Dobbeltomstiller til tilslutning af to telefonapparater til samme abonnentledning i et telefonanlæg.
DK121241B
(da)