CH225671A - Circuit arrangement in telephone systems, in particular private branch exchanges, with several centers. - Google Patents

Circuit arrangement in telephone systems, in particular private branch exchanges, with several centers.

Info

Publication number
CH225671A
CH225671A CH225671DA CH225671A CH 225671 A CH225671 A CH 225671A CH 225671D A CH225671D A CH 225671DA CH 225671 A CH225671 A CH 225671A
Authority
CH
Switzerland
Prior art keywords
circuit arrangement
private branch
telephone systems
branch exchanges
particular private
Prior art date
Application number
Other languages
German (de)
Inventor
Fides Gesellschaft Beschraenk
Original Assignee
Fides Gmbh
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 Fides Gmbh filed Critical Fides Gmbh
Publication of CH225671A publication Critical patent/CH225671A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B33/00—Disazo and polyazo dyes of the types A->K<-B, A->B->K<-C, or the like, prepared by diazotising and coupling
    • C09B33/18—Trisazo or higher polyazo dyes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
    • H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
    • H04Q3/625—Arrangements in the private branch exchange

Landscapes

  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
CH225671D 1938-12-17 1941-11-07 Circuit arrangement in telephone systems, in particular private branch exchanges, with several centers. CH225671A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES135055D DE705183C (en) 1938-12-17 1938-12-17 Circuit arrangement for telephone systems with dialer operation

Publications (1)

Publication Number Publication Date
CH225671A true CH225671A (en) 1943-02-15

Family

ID=39364047

Family Applications (1)

Application Number Title Priority Date Filing Date
CH225671D CH225671A (en) 1938-12-17 1941-11-07 Circuit arrangement in telephone systems, in particular private branch exchanges, with several centers.

Country Status (2)

Country Link
CH (1) CH225671A (en)
DE (1) DE705183C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE925531C (en) * 1944-12-19 1955-03-24 Standard Elek Zitaets Ges Ag Circuit arrangement for telephone extension systems with dialer operation
DE874160C (en) * 1948-10-02 1953-04-20 Normalzeit G M B H Circuit arrangement for a small telephone center with directly controlled, multiply used dialers

Also Published As

Publication number Publication date
DE705183C (en) 1941-04-19

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