DK535478A - Kalde samtale og doeraabneanlaeg - Google Patents

Kalde samtale og doeraabneanlaeg

Info

Publication number
DK535478A
DK535478A DK535478A DK535478A DK535478A DK 535478 A DK535478 A DK 535478A DK 535478 A DK535478 A DK 535478A DK 535478 A DK535478 A DK 535478A DK 535478 A DK535478 A DK 535478A
Authority
DK
Denmark
Prior art keywords
door opening
cold call
opening facilities
facilities
call
Prior art date
Application number
DK535478A
Other languages
English (en)
Inventor
G Schlaps
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 DK535478A publication Critical patent/DK535478A/da

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)
DK535478A 1977-12-16 1978-11-29 Kalde samtale og doeraabneanlaeg DK535478A (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2756276A DE2756276C3 (de) 1977-12-16 1977-12-16 Schaltungsanordnung für eine Ruf-, Türsprech- und Türöffneranlage

Publications (1)

Publication Number Publication Date
DK535478A true DK535478A (da) 1979-06-17

Family

ID=6026379

Family Applications (1)

Application Number Title Priority Date Filing Date
DK535478A DK535478A (da) 1977-12-16 1978-11-29 Kalde samtale og doeraabneanlaeg

Country Status (14)

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

Families Citing this family (2)

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

Also Published As

Publication number Publication date
IT1101562B (it) 1985-10-07
IS2466A7 (is) 1978-11-24
DE2756276C3 (de) 1982-08-12
LU80652A1 (de) 1979-04-13
DE2756276B2 (de) 1979-10-11
GB2010642B (en) 1982-01-20
IT7830842A0 (it) 1978-12-14
PT68875A (pt) 1979-01-01
DE2756276A1 (de) 1979-06-21
GB2010642A (en) 1979-06-27
FI783834A (fi) 1979-06-17
SE7812671L (sv) 1979-06-17
FR2412126B3 (da) 1981-10-16
NL7812007A (nl) 1979-06-19
FR2412126A1 (da) 1979-07-13
BE872780A (nl) 1979-03-30
ES475995A1 (es) 1979-04-16
NO784143L (no) 1979-06-19

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