NL7507718A - Interfoonstelsel. - Google Patents

Interfoonstelsel.

Info

Publication number
NL7507718A
NL7507718A NL7507718A NL7507718A NL7507718A NL 7507718 A NL7507718 A NL 7507718A NL 7507718 A NL7507718 A NL 7507718A NL 7507718 A NL7507718 A NL 7507718A NL 7507718 A NL7507718 A NL 7507718A
Authority
NL
Netherlands
Prior art keywords
interphone system
interphone
Prior art date
Application number
NL7507718A
Other languages
English (en)
Original Assignee
Stoc Produzione S P A
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 Stoc Produzione S P A filed Critical Stoc Produzione S P A
Publication of NL7507718A publication Critical patent/NL7507718A/nl

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/02—Arrangements for interconnection not involving centralised switching involving a common line for all parties
NL7507718A 1974-06-27 1975-06-27 Interfoonstelsel. NL7507718A (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT51772/74A IT1029547B (it) 1974-06-27 1974-06-27 Impianto interfonico con apparecchi in parallelo su unica linea bifilare

Publications (1)

Publication Number Publication Date
NL7507718A true NL7507718A (nl) 1975-12-30

Family

ID=11275703

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7507718A NL7507718A (nl) 1974-06-27 1975-06-27 Interfoonstelsel.

Country Status (9)

Country Link
JP (1) JPS5125003A (nl)
BE (1) BE830487A (nl)
DE (1) DE2528854A1 (nl)
DK (1) DK291475A (nl)
FR (1) FR2276755A1 (nl)
IT (1) IT1029547B (nl)
LU (1) LU72821A1 (nl)
NL (1) NL7507718A (nl)
SE (1) SE7507069L (nl)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52118091U (nl) * 1976-03-03 1977-09-07
DE2819386A1 (de) * 1978-05-03 1979-11-08 Bosch Gmbh Robert Fernbedienung fuer funksprechgeraete
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
DE2946177C2 (de) * 1979-11-15 1988-08-18 S. Siedle & Söhne Telefon- und Telegrafenwerke GmbH, 7743 Furtwangen Hausanlage zur Übertragung von Informationen
JPS56109065A (en) * 1980-02-01 1981-08-29 Fujitsu Ltd Selective callout system by push button telephone set
JPS5745768A (en) * 1980-08-30 1982-03-15 Matsushita Electric Works Ltd Emergency telephone device
DE3320397A1 (de) * 1983-06-06 1984-12-06 Siemens AG, 1000 Berlin und 8000 München Anordnung zur vermittelbaren uebertragung von tonsignalen
JPH0620210B2 (ja) * 1985-01-30 1994-03-16 アイホン株式会社 インターホン電話機混成装置
JPS61128860U (nl) * 1985-01-31 1986-08-12
JPS6276851A (ja) * 1985-09-30 1987-04-08 Hitachi Elevator Eng & Serv Co Ltd 多局インタ−ホンの選局装置

Also Published As

Publication number Publication date
SE7507069L (sv) 1975-12-29
FR2276755A1 (fr) 1976-01-23
DE2528854A1 (de) 1976-01-08
JPS5125003A (nl) 1976-03-01
BE830487A (fr) 1975-10-16
LU72821A1 (nl) 1975-09-29
IT1029547B (it) 1979-03-20
DK291475A (da) 1975-12-28

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