AT280106B - Switching arrangement in automatic intercoms - Google Patents

Switching arrangement in automatic intercoms

Info

Publication number
AT280106B
AT280106B AT53568A AT53568A AT280106B AT 280106 B AT280106 B AT 280106B AT 53568 A AT53568 A AT 53568A AT 53568 A AT53568 A AT 53568A AT 280106 B AT280106 B AT 280106B
Authority
AT
Austria
Prior art keywords
intercoms
automatic
switching arrangement
switching
arrangement
Prior art date
Application number
AT53568A
Other languages
German (de)
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Application granted granted Critical
Publication of AT280106B publication Critical patent/AT280106B/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
    • H04M11/027—Annunciator systems for hospitals

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
AT53568A 1967-01-18 1968-01-18 Switching arrangement in automatic intercoms AT280106B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE75967 1967-01-18

Publications (1)

Publication Number Publication Date
AT280106B true AT280106B (en) 1970-03-25

Family

ID=20257060

Family Applications (1)

Application Number Title Priority Date Filing Date
AT53568A AT280106B (en) 1967-01-18 1968-01-18 Switching arrangement in automatic intercoms

Country Status (5)

Country Link
AT (1) AT280106B (en)
DK (1) DK115190B (en)
FI (1) FI45610C (en)
GB (1) GB1164592A (en)
NO (1) NO120234B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2233797A1 (en) * 1972-07-10 1974-01-24 Zettler Elektrotechn Alois MESSAGE SYSTEM FOR HOSPITALS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2233797A1 (en) * 1972-07-10 1974-01-24 Zettler Elektrotechn Alois MESSAGE SYSTEM FOR HOSPITALS

Also Published As

Publication number Publication date
FI45610C (en) 1972-07-10
NO120234B (en) 1970-09-21
DK115190B (en) 1969-09-15
GB1164592A (en) 1969-09-17
FI45610B (en) 1972-04-04

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee