BE531937A - - Google Patents

Info

Publication number
BE531937A
BE531937A BE531937DA BE531937A BE 531937 A BE531937 A BE 531937A BE 531937D A BE531937D A BE 531937DA BE 531937 A BE531937 A BE 531937A
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 BE531937A publication Critical patent/BE531937A/xx

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/08Indicating faults in circuits or apparatus
    • H04M3/10Providing fault- or trouble-signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M11/00Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/04Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Alarm Systems (AREA)
BE531937D 1953-09-19 BE531937A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK776078X 1953-09-19

Publications (1)

Publication Number Publication Date
BE531937A true BE531937A (fr)

Family

ID=8152739

Family Applications (1)

Application Number Title Priority Date Filing Date
BE531937D BE531937A (fr) 1953-09-19

Country Status (5)

Country Link
BE (1) BE531937A (fr)
DE (1) DE1018931B (fr)
FR (1) FR1113111A (fr)
GB (1) GB776078A (fr)
NL (2) NL190903A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1013706B (de) * 1956-01-14 1957-08-14 Telefonbau & Normalzeit Gmbh Schaltungsanordnung zur UEbertragung von Meldungen ueber besprochene Fernsprechanschlussleitungen
DE1233024B (de) * 1963-05-03 1967-01-26 Siemens Ag Einrichtung zur UEbertragung von Signalen ueber ein Fernsprechnetz
DE1265793B (de) * 1966-10-22 1968-04-11 August Woerl Alarmanlage zur selbsttaetigen UEbertragung einer Nachricht ueber eine Fernsprechleitung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE661785C (de) * 1927-07-20 1938-06-28 Siemens & Halske Akt Ges Schaltungsanordnung zur UEbertragung von regelmaessigen Fortschaltestromstoessen fuer Uhren und von Alarmmeldungen
DE655938C (de) * 1927-12-20 1938-01-31 Siemens & Halske Akt Ges Schaltungsanordnung fuer Nachrichtenuebertragung ueber Fernsprechleitungen
DE730913C (de) * 1941-04-30 1943-01-28 Siemens Ag Meldeanlage fuer die UEbermittlung von Meldungen verschiedener Bedeutung und fuer die Herstellung von Fernsprechverbindungen ueber Schleifenleitungen
DE805287C (de) * 1950-04-02 1951-05-15 Telefonbau & Normalzeit Gmbh Schaltungsanordnung zur UEbertragung von Meldungen ueber besprochene Fernsprechleitungen

Also Published As

Publication number Publication date
FR1113111A (fr) 1956-03-23
NL190903A (fr)
NL88907C (fr)
DE1018931B (de) 1957-11-07
GB776078A (en) 1957-06-05

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