BE478498A - - Google Patents

Info

Publication number
BE478498A
BE478498A BE478498DA BE478498A BE 478498 A BE478498 A BE 478498A BE 478498D A BE478498D A BE 478498DA BE 478498 A BE478498 A BE 478498A
Authority
BE
Belgium
Application number
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.)
Publication of BE478498A publication Critical patent/BE478498A/xx

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M9/00Arrangements for interconnection not involving centralised switching
    • H04M9/001Two-way communication systems between a limited number of parties
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/42Systems providing special services or facilities to subscribers
    • H04M3/56Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q3/00Selecting arrangements
    • H04Q3/0008Selecting arrangements using relay selectors in the switching stages
    • H04Q3/0012Selecting arrangements using relay selectors in the switching stages in which the relays are arranged in a matrix configuration

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephone Set Structure (AREA)
  • Push-Button Switches (AREA)
BE478498D 1945-02-20 BE478498A (en:Method)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE283934X 1945-02-20

Publications (1)

Publication Number Publication Date
BE478498A true BE478498A (en:Method)

Family

ID=20307080

Family Applications (1)

Application Number Title Priority Date Filing Date
BE478498D BE478498A (en:Method) 1945-02-20

Country Status (3)

Country Link
BE (1) BE478498A (en:Method)
CH (1) CH283934A (en:Method)
GB (1) GB643973A (en:Method)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE937651C (de) * 1952-08-31 1956-01-12 Siemens Ag Fernmelde-, insbesondere Fernsprechanlage mit Waehlerbetrieb
DE972172C (de) * 1953-05-16 1959-06-04 Normalzeit G M B H Schaltungsanordnung fuer Fernsprechanlagen mit einer Stromstosssendevorrichtung

Also Published As

Publication number Publication date
CH283934A (fr) 1952-06-30
GB643973A (en) 1950-10-04

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