FR2113710A5 - - Google Patents

Info

Publication number
FR2113710A5
FR2113710A5 FR7140122A FR7140122A FR2113710A5 FR 2113710 A5 FR2113710 A5 FR 2113710A5 FR 7140122 A FR7140122 A FR 7140122A FR 7140122 A FR7140122 A FR 7140122A FR 2113710 A5 FR2113710 A5 FR 2113710A5
Authority
FR
France
Legal status (The legal status 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 status listed.)
Expired
Application number
FR7140122A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CITOVOX
Original Assignee
CITOVOX
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 filed Critical CITOVOX
Application granted granted Critical
Publication of FR2113710A5 publication Critical patent/FR2113710A5/fr
Expired legal-status Critical Current

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)
  • Telephonic Communication Services (AREA)
  • Lock And Its Accessories (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
FR7140122A 1970-11-10 1971-11-09 Expired FR2113710A5 (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
FR2113710A5 true FR2113710A5 (en) 1972-06-23

Family

ID=11233763

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7140122A Expired FR2113710A5 (en) 1970-11-10 1971-11-09

Country Status (4)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2379205A1 (en) * 1977-01-27 1978-08-25 Freibogen Anstalt INTERCOM INSTALLATION
FR2455154A1 (en) * 1979-04-24 1980-11-21 Urmet Spa Intercommunication system for block of flats - deactivates circuits not actively used to reduce interference between circuits on busy lines

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2756276C3 (en) * 1977-12-16 1982-08-12 S. Siedle & Söhne Telefon- und Telegrafenwerke GmbH, 7743 Furtwangen Circuit arrangement for a call, door intercom and door opener system
IT1110111B (en) * 1979-01-12 1985-12-23 Acet Srl TWO-WIRE ELECTRIC DOOR ENTRY SYSTEM, SUSCEPTABLE TO USE A PRESSISTING DOOR BELL SYSTEM, WITHOUT THE NEED FOR ADDITIONAL POWER LINES
DE3804552C1 (en) * 1988-02-13 1989-03-02 Ritto-Werk Loh Gmbh & Co Kg, 6342 Haiger, De Door intercom system
DE3910858C2 (en) * 1989-04-04 1997-02-20 Grothe & Soehne Kg A Switching arrangement for door intercom and door opener systems
DE9103782U1 (en) * 1991-03-27 1991-10-17 TELKO GmbH, 8933 Untermeitingen Two-wire door intercom with hands-free function

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2379205A1 (en) * 1977-01-27 1978-08-25 Freibogen Anstalt INTERCOM INSTALLATION
FR2455154A1 (en) * 1979-04-24 1980-11-21 Urmet Spa Intercommunication system for block of flats - deactivates circuits not actively used to reduce interference between circuits on busy lines

Also Published As

Publication number Publication date
DE2156517A1 (en) 1972-09-21
DE2156517B2 (en) 1979-05-31
DE2156517C3 (en) 1980-01-31
BE775090A (en) 1972-03-01
ES396844A1 (en) 1974-06-16

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Legal Events

Date Code Title Description
TP Transmission of property