CH71981A - Circuit arrangement for telephone systems with automatic or semi-automatic operation and group stations - Google Patents

Circuit arrangement for telephone systems with automatic or semi-automatic operation and group stations

Info

Publication number
CH71981A
CH71981A CH71981A CH71981DA CH71981A CH 71981 A CH71981 A CH 71981A CH 71981 A CH71981 A CH 71981A CH 71981D A CH71981D A CH 71981DA CH 71981 A CH71981 A CH 71981A
Authority
CH
Switzerland
Prior art keywords
automatic
semi
circuit arrangement
telephone systems
group stations
Prior art date
Application number
CH71981A
Other languages
German (de)
Inventor
Aktien-Gesellschaft Sie 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 CH71981A publication Critical patent/CH71981A/en

Links

CH71981A 1914-09-29 1914-09-29 Circuit arrangement for telephone systems with automatic or semi-automatic operation and group stations CH71981A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH71981T 1914-09-29

Publications (1)

Publication Number Publication Date
CH71981A true CH71981A (en) 1916-03-16

Family

ID=4321407

Family Applications (1)

Application Number Title Priority Date Filing Date
CH71981A CH71981A (en) 1914-09-29 1914-09-29 Circuit arrangement for telephone systems with automatic or semi-automatic operation and group stations

Country Status (1)

Country Link
CH (1) CH71981A (en)

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