IT1077978B - Impianto interfonico - Google Patents

Impianto interfonico

Info

Publication number
IT1077978B
IT1077978B IT4819577A IT4819577A IT1077978B IT 1077978 B IT1077978 B IT 1077978B IT 4819577 A IT4819577 A IT 4819577A IT 4819577 A IT4819577 A IT 4819577A IT 1077978 B IT1077978 B IT 1077978B
Authority
IT
Italy
Prior art keywords
intercom system
intercom
Prior art date
Application number
IT4819577A
Other languages
English (en)
Original Assignee
Freibogen Anstalt
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 Freibogen Anstalt filed Critical Freibogen Anstalt
Application granted granted Critical
Publication of IT1077978B publication Critical patent/IT1077978B/it

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)
IT4819577A 1977-01-27 1977-02-24 Impianto interfonico IT1077978B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH104077A CH614578A5 (en) 1977-01-27 1977-01-27 Intercom system, in particular for use as a door intercom system

Publications (1)

Publication Number Publication Date
IT1077978B true IT1077978B (it) 1985-05-08

Family

ID=4201051

Family Applications (1)

Application Number Title Priority Date Filing Date
IT4819577A IT1077978B (it) 1977-01-27 1977-02-24 Impianto interfonico

Country Status (5)

Country Link
CH (1) CH614578A5 (it)
DE (1) DE2729469C2 (it)
ES (1) ES457209A1 (it)
FR (1) FR2379205A1 (it)
IT (1) IT1077978B (it)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3665116A (en) * 1969-12-19 1972-05-23 Fasco Industries Apartment house intercom system
FR2113710A5 (it) * 1970-11-10 1972-06-23 Citovox
DE2409393B2 (de) * 1974-02-27 1976-07-29 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung fuer eine kleine bis mittlere torfernsprechanlage ohne zentrale steuereinrichtungen mit mehreren von einer torstation erreichbaren hausstationen
US3978468A (en) * 1974-11-11 1976-08-31 Robert F. Moore Intercom call signaling mechanism

Also Published As

Publication number Publication date
ES457209A1 (es) 1978-02-01
DE2729469C2 (de) 1986-04-24
DE2729469A1 (de) 1978-08-03
FR2379205A1 (fr) 1978-08-25
CH614578A5 (en) 1979-11-30
FR2379205B1 (it) 1984-05-04

Similar Documents

Publication Publication Date Title
SE7810439L (sv) Kommunikationssystem
SE7804577L (sv) Kommunikationsanleggning
BE863067A (nl) Bypass - doorspoelsysteem
SE7812556L (sv) Skalningsbar forbindning
FI773611A7 (fi) Anordning foer att stapla kontinuerligt saerskilt i en delvis varandra taeckande stroem fallande vikta tryckprodukter
SE7808911L (sv) Telekommunikationssystem
AT364318B (de) Bauelementsystem
FI782267A7 (fi) System foer pyrolytisk foerbraenning av trae- och annat avfall
SE7809170L (sv) Telekommunikationssystem
AT371887B (de) Dreh-kipp-beschlag
SE7802126L (sv) Byggsystem
FI782046A7 (fi) Telekommunikationssystem
AR215677A1 (es) Tarugo
PL208438A1 (pl) System lacznosci
FI772475A7 (fi) Anvaendning av magnetiskt system
FI783651A7 (fi) Foerbaettringar infoerda i system foer rengoering av allmaenna transportfordon
FI780773A7 (fi) Anslutningsarrangemang
FI771409A7 (fi) Saett att anrika sulfidisk nickelmalm
DD134905A5 (de) Dezentral gesteuerte fernsprechanlage
FI771586A7 (fi) Anordning foer att avlaegsna olja fraon vattendrag
DK398578A (da) Forbindelseskobling
DK125778A (da) Fungcide midler
AT370933B (de) Notrufanlage
FI781974A7 (fi) System foer uppvaermning av byggningar
FI784025A7 (fi) Depositionssystem