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CH271839A - Circuit arrangement in a small telephone exchange. - Google Patents

Circuit arrangement in a small telephone exchange.

Info

Publication number
CH271839A
CH271839A CH271839DA CH271839A CH 271839 A CH271839 A CH 271839A CH 271839D A CH271839D A CH 271839DA CH 271839 A CH271839 A CH 271839A
Authority
CH
Switzerland
Prior art keywords
circuit arrangement
telephone exchange
small telephone
small
exchange
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellschaft Autophon
Original Assignee
Autophon 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 Autophon Ag filed Critical Autophon Ag
Publication of CH271839A publication Critical patent/CH271839A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/58—Arrangements for transferring received calls from one subscriber to another; Arrangements affording interim conversations between either the calling or the called party and a third party
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems
    • H04M9/005—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems with subscriber controlled access to an exchange line

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
CH271839D 1948-12-15 1948-12-15 Circuit arrangement in a small telephone exchange. CH271839A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH264768T 1948-12-15
CH271839T 1948-12-15

Publications (1)

Publication Number Publication Date
CH271839A true CH271839A (en) 1950-11-15

Family

ID=25730767

Family Applications (2)

Application Number Title Priority Date Filing Date
CH264768D CH264768A (en) 1948-12-15 1947-09-25 Circuit arrangement in a small telephone exchange.
CH271839D CH271839A (en) 1948-12-15 1948-12-15 Circuit arrangement in a small telephone exchange.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CH264768D CH264768A (en) 1948-12-15 1947-09-25 Circuit arrangement in a small telephone exchange.

Country Status (1)

Country Link
CH (2) CH264768A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3445564A (en) * 1965-01-04 1969-05-20 Ely A Kirschner Rapidly drying lower aliphatic alcohol-acetone sanitizing composition and method

Also Published As

Publication number Publication date
CH264768A (en) 1949-10-31

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