CH67980A - Circuit arrangement in telephone systems with semi-automatic operation - Google Patents

Circuit arrangement in telephone systems with semi-automatic operation

Info

Publication number
CH67980A
CH67980A CH67980A CH67980DA CH67980A CH 67980 A CH67980 A CH 67980A CH 67980 A CH67980 A CH 67980A CH 67980D A CH67980D A CH 67980DA CH 67980 A CH67980 A CH 67980A
Authority
CH
Switzerland
Prior art keywords
semi
circuit arrangement
automatic operation
telephone systems
telephone
Prior art date
Application number
CH67980A
Other languages
German (de)
Inventor
Aktiengesellschaft Siem Halske
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Publication of CH67980A publication Critical patent/CH67980A/en

Links

CH67980A 1913-11-01 1913-11-01 Circuit arrangement in telephone systems with semi-automatic operation CH67980A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH67980T 1913-11-01

Publications (1)

Publication Number Publication Date
CH67980A true CH67980A (en) 1915-02-01

Family

ID=4315185

Family Applications (1)

Application Number Title Priority Date Filing Date
CH67980A CH67980A (en) 1913-11-01 1913-11-01 Circuit arrangement in telephone systems with semi-automatic operation

Country Status (1)

Country Link
CH (1) CH67980A (en)

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