AT72181B - Circuit arrangement for private branch exchanges with several trunk lines. - Google Patents

Circuit arrangement for private branch exchanges with several trunk lines.

Info

Publication number
AT72181B
AT72181B AT72181DA AT72181B AT 72181 B AT72181 B AT 72181B AT 72181D A AT72181D A AT 72181DA AT 72181 B AT72181 B AT 72181B
Authority
AT
Austria
Prior art keywords
circuit arrangement
private branch
trunk lines
branch exchanges
several trunk
Prior art date
Application number
Other languages
German (de)
Original Assignee
Oesterreichische Telefon Ges 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 Oesterreichische Telefon Ges M filed Critical Oesterreichische Telefon Ges M
Application granted granted Critical
Publication of AT72181B publication Critical patent/AT72181B/en

Links

Landscapes

  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Interface Circuits In Exchanges (AREA)

Description

  

   <Desc/Clms Page number 1> 
 
 EMI1.1 
 
 EMI1.2 
 

 <Desc/Clms Page number 2> 

 
 EMI2.1 




   <Desc / Clms Page number 1>
 
 EMI1.1
 
 EMI1.2
 

 <Desc / Clms Page number 2>

 
 EMI2.1
AT72181D 1913-09-13 1913-09-13 Circuit arrangement for private branch exchanges with several trunk lines. AT72181B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT72181T 1913-09-13

Publications (1)

Publication Number Publication Date
AT72181B true AT72181B (en) 1916-07-25

Family

ID=3593870

Family Applications (1)

Application Number Title Priority Date Filing Date
AT72181D AT72181B (en) 1913-09-13 1913-09-13 Circuit arrangement for private branch exchanges with several trunk lines.

Country Status (1)

Country Link
AT (1) AT72181B (en)

Similar Documents

Publication Publication Date Title
AT72181B (en) Circuit arrangement for private branch exchanges with several trunk lines.
AT74347B (en) Circuit arrangement for telephone exchanges which can be used preferably on warships.
AT78853B (en) Electric mine.
AT77276B (en) Lubricator.
AT90094B (en) Time switch for stair lighting.
AT75666B (en) Arm replacement.
AT70659B (en) Lock.
AT74845B (en) Circuit arrangement for telephone systems.
AT74825B (en) Telephone switching system.
AT74343B (en) Self-collecting telephone station.
AT79130B (en) Selector without zero position for telephone systems.
AT75678B (en) Heater.
AT74600B (en) Lock for firearms.
AT62688B (en) Circuit arrangement for telephone exchanges with automatic call distribution.
AT70550B (en) Circuit arrangement for telephone exchanges with automatic call distribution.
AT74346B (en) Thermal telephone.
AT76419B (en) Motor plow.
AT76292B (en) Thermal telephone.
AT44976B (en) Circuit arrangement for automatic telephone exchanges.
AT74045B (en) Circuit arrangement for automatically or semi-automatically operated telephone systems with separate setting and speech connection paths.
AT75091B (en) Flushing device with bell lifter.
AT76616B (en) Switching device for compound brakes.
AT73781B (en) Can lock.
AT68425B (en) Circuit arrangement for telephone exchanges with automatic call distribution.
AT79295B (en) Keyhole lock.