AT143566B - Circuit arrangement for self-connecting private branch exchanges. - Google Patents

Circuit arrangement for self-connecting private branch exchanges.

Info

Publication number
AT143566B
AT143566B AT143566DA AT143566B AT 143566 B AT143566 B AT 143566B AT 143566D A AT143566D A AT 143566DA AT 143566 B AT143566 B AT 143566B
Authority
AT
Austria
Prior art keywords
self
circuit arrangement
private branch
branch exchanges
connecting private
Prior art date
Application number
Other languages
German (de)
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 AT143566B publication Critical patent/AT143566B/en

Links

AT143566D 1932-09-09 1933-09-02 Circuit arrangement for self-connecting private branch exchanges. AT143566B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE143566X 1932-09-09

Publications (1)

Publication Number Publication Date
AT143566B true AT143566B (en) 1935-11-25

Family

ID=20298956

Family Applications (1)

Application Number Title Priority Date Filing Date
AT143566D AT143566B (en) 1932-09-09 1933-09-02 Circuit arrangement for self-connecting private branch exchanges.

Country Status (1)

Country Link
AT (1) AT143566B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE765916C (en) * 1938-12-06 1953-12-07 Siemens & Halske A G Circuit arrangement for telephone systems for initiating and canceling inquiry switchings

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE765916C (en) * 1938-12-06 1953-12-07 Siemens & Halske A G Circuit arrangement for telephone systems for initiating and canceling inquiry switchings

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