DK89645C - Coupling to inquiry calls at private automatic telephone exchanges. - Google Patents

Coupling to inquiry calls at private automatic telephone exchanges.

Info

Publication number
DK89645C
DK89645C DK257557A DK257557A DK89645C DK 89645 C DK89645 C DK 89645C DK 257557 A DK257557 A DK 257557A DK 257557 A DK257557 A DK 257557A DK 89645 C DK89645 C DK 89645C
Authority
DK
Denmark
Prior art keywords
coupling
automatic telephone
telephone exchanges
private automatic
inquiry calls
Prior art date
Application number
DK257557A
Other languages
Danish (da)
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Application granted granted Critical
Publication of DK89645C publication Critical patent/DK89645C/en

Links

DK257557A 1956-07-26 1957-07-24 Coupling to inquiry calls at private automatic telephone exchanges. DK89645C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE89645X 1956-07-26

Publications (1)

Publication Number Publication Date
DK89645C true DK89645C (en) 1960-09-05

Family

ID=20275472

Family Applications (1)

Application Number Title Priority Date Filing Date
DK257557A DK89645C (en) 1956-07-26 1957-07-24 Coupling to inquiry calls at private automatic telephone exchanges.

Country Status (1)

Country Link
DK (1) DK89645C (en)

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