BE775090A - Installation-parlophone avec portier electrique et connexions obtenues par deux cables seulement - Google Patents

Installation-parlophone avec portier electrique et connexions obtenues par deux cables seulement

Info

Publication number
BE775090A
BE775090A BE775090A BE775090A BE775090A BE 775090 A BE775090 A BE 775090A BE 775090 A BE775090 A BE 775090A BE 775090 A BE775090 A BE 775090A BE 775090 A BE775090 A BE 775090A
Authority
BE
Belgium
Prior art keywords
parlophone
doorphone
cables
installation
electric
Prior art date
Application number
BE775090A
Other languages
English (en)
French (fr)
Original Assignee
Citovox Ditta
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 Citovox Ditta filed Critical Citovox Ditta
Publication of BE775090A publication Critical patent/BE775090A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/02—Telephonic communication systems specially adapted for combination with other electrical systems with bell or annunciator systems
    • H04M11/025—Door telephones

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Lock And Its Accessories (AREA)
  • Telephonic Communication Services (AREA)
BE775090A 1970-11-10 1971-11-09 Installation-parlophone avec portier electrique et connexions obtenues par deux cables seulement BE775090A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT3155770 1970-11-10

Publications (1)

Publication Number Publication Date
BE775090A true BE775090A (fr) 1972-03-01

Family

ID=11233763

Family Applications (1)

Application Number Title Priority Date Filing Date
BE775090A BE775090A (fr) 1970-11-10 1971-11-09 Installation-parlophone avec portier electrique et connexions obtenues par deux cables seulement

Country Status (4)

Country Link
BE (1) BE775090A (enExample)
DE (1) DE2156517C3 (enExample)
ES (1) ES396844A1 (enExample)
FR (1) FR2113710A5 (enExample)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH614578A5 (en) * 1977-01-27 1979-11-30 Freibogen Anstalt Intercom system, in particular for use as a door intercom system
DE2756276C3 (de) * 1977-12-16 1982-08-12 S. Siedle & Söhne Telefon- und Telegrafenwerke GmbH, 7743 Furtwangen Schaltungsanordnung für eine Ruf-, Türsprech- und Türöffneranlage
IT1110111B (it) * 1979-01-12 1985-12-23 Acet Srl Impianto citofonico a portiere elettrico a due fili,suscettibile di utilizzare un pressistente impianto a campanello,senza necessita' di ulteriori linee di alimentazione
IT1118959B (it) * 1979-04-24 1986-03-03 Urmet Spa Impianto citofonico a posto esterno con dispositivo apriporta elettrico
DE3804552C1 (en) * 1988-02-13 1989-03-02 Ritto-Werk Loh Gmbh & Co Kg, 6342 Haiger, De Door intercom system
DE3910858C2 (de) * 1989-04-04 1997-02-20 Grothe & Soehne Kg A Schaltanordnung für Türsprech- und Türöffneranlagen
DE9103782U1 (de) * 1991-03-27 1991-10-17 TELKO GmbH, 8933 Untermeitingen Zweidraht-Türsprechanlage mit Freisprechfunktion

Also Published As

Publication number Publication date
DE2156517A1 (de) 1972-09-21
DE2156517C3 (de) 1980-01-31
ES396844A1 (es) 1974-06-16
DE2156517B2 (de) 1979-05-31
FR2113710A5 (enExample) 1972-06-23

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