NL7812007A - CHAIN DEVICE INTENDED FOR A CALL SYSTEM, DOOR COMMUNICATION SYSTEM OR A DOOR CONTROL DEVICE. - Google Patents

CHAIN DEVICE INTENDED FOR A CALL SYSTEM, DOOR COMMUNICATION SYSTEM OR A DOOR CONTROL DEVICE.

Info

Publication number
NL7812007A
NL7812007A NL7812007A NL7812007A NL7812007A NL 7812007 A NL7812007 A NL 7812007A NL 7812007 A NL7812007 A NL 7812007A NL 7812007 A NL7812007 A NL 7812007A NL 7812007 A NL7812007 A NL 7812007A
Authority
NL
Netherlands
Prior art keywords
door
control device
communication system
door control
chain
Prior art date
Application number
NL7812007A
Other languages
Dutch (nl)
Original Assignee
Siedle & Soehne S
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 Siedle & Soehne S filed Critical Siedle & Soehne S
Publication of NL7812007A publication Critical patent/NL7812007A/en

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)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
NL7812007A 1977-12-16 1978-12-08 CHAIN DEVICE INTENDED FOR A CALL SYSTEM, DOOR COMMUNICATION SYSTEM OR A DOOR CONTROL DEVICE. NL7812007A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2756276A DE2756276C3 (en) 1977-12-16 1977-12-16 Circuit arrangement for a call, door intercom and door opener system

Publications (1)

Publication Number Publication Date
NL7812007A true NL7812007A (en) 1979-06-19

Family

ID=6026379

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7812007A NL7812007A (en) 1977-12-16 1978-12-08 CHAIN DEVICE INTENDED FOR A CALL SYSTEM, DOOR COMMUNICATION SYSTEM OR A DOOR CONTROL DEVICE.

Country Status (14)

Country Link
BE (1) BE872780A (en)
DE (1) DE2756276C3 (en)
DK (1) DK535478A (en)
ES (1) ES475995A1 (en)
FI (1) FI783834A (en)
FR (1) FR2412126B3 (en)
GB (1) GB2010642B (en)
IS (1) IS2466A7 (en)
IT (1) IT1101562B (en)
LU (1) LU80652A1 (en)
NL (1) NL7812007A (en)
NO (1) NO784143L (en)
PT (1) PT68875A (en)
SE (1) SE7812671L (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE4130101C1 (en) * 1991-09-11 1993-02-04 Ritto-Werk Loh Gmbh & Co Kg, 6342 Haiger, De Door intercom with door-opening button - centrally generates call signal and feeds to individual internal intercoms using circuit including two series-connected Zener diodes and parallel decoupling diode

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2113710A5 (en) * 1970-11-10 1972-06-23 Citovox

Also Published As

Publication number Publication date
GB2010642B (en) 1982-01-20
ES475995A1 (en) 1979-04-16
BE872780A (en) 1979-03-30
DK535478A (en) 1979-06-17
DE2756276B2 (en) 1979-10-11
IS2466A7 (en) 1978-11-24
PT68875A (en) 1979-01-01
FR2412126A1 (en) 1979-07-13
IT1101562B (en) 1985-10-07
SE7812671L (en) 1979-06-17
NO784143L (en) 1979-06-19
DE2756276C3 (en) 1982-08-12
FR2412126B3 (en) 1981-10-16
GB2010642A (en) 1979-06-27
FI783834A (en) 1979-06-17
LU80652A1 (en) 1979-04-13
DE2756276A1 (en) 1979-06-21
IT7830842A0 (en) 1978-12-14

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Legal Events

Date Code Title Description
BV The patent application has lapsed