AT339382B - Tastwahl-nummernschalter - Google Patents

Tastwahl-nummernschalter

Info

Publication number
AT339382B
AT339382B AT341974A AT341974A AT339382B AT 339382 B AT339382 B AT 339382B AT 341974 A AT341974 A AT 341974A AT 341974 A AT341974 A AT 341974A AT 339382 B AT339382 B AT 339382B
Authority
AT
Austria
Prior art keywords
push button
button switch
switch
push
button
Prior art date
Application number
AT341974A
Other languages
German (de)
English (en)
Other versions
ATA341974A (de
Inventor
Karl-Hermann Ing Krapp
Jurgen Dipl Ing Zinn
Hubert Dipl Ing Hannig
Original Assignee
Deutsche Fernsprecher Gmbh
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
Priority claimed from DE19732321794 external-priority patent/DE2321794B2/de
Priority claimed from DE19732321897 external-priority patent/DE2321897C3/de
Application filed by Deutsche Fernsprecher Gmbh filed Critical Deutsche Fernsprecher Gmbh
Publication of ATA341974A publication Critical patent/ATA341974A/de
Application granted granted Critical
Publication of AT339382B publication Critical patent/AT339382B/de

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses
    • H04M1/312—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses pulses produced by electronic circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
AT341974A 1973-04-30 1974-04-25 Tastwahl-nummernschalter AT339382B (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19732321794 DE2321794B2 (de) 1973-04-30 1973-04-30 Tastwahl-Nummernschalter für Fernsprechteilnehmerapparate
DE19732321897 DE2321897C3 (de) 1973-04-30 Schaltungsanordnung zum Ableiten einer als Spannungsabfall in einer stromdurchflossenen Schleife auftretenden kleinen Gleichspannung

Publications (2)

Publication Number Publication Date
ATA341974A ATA341974A (de) 1977-02-15
AT339382B true AT339382B (de) 1977-10-10

Family

ID=25765065

Family Applications (1)

Application Number Title Priority Date Filing Date
AT341974A AT339382B (de) 1973-04-30 1974-04-25 Tastwahl-nummernschalter

Country Status (4)

Country Link
AT (1) AT339382B (enExample)
FR (1) FR2227696B1 (enExample)
IT (1) IT1011800B (enExample)
NL (1) NL7405798A (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE7608076L (sv) * 1975-07-25 1977-01-26 Carlo Baldoni Med tio siffror forsedd, digital nummertagare av tangenttyp

Also Published As

Publication number Publication date
FR2227696B1 (enExample) 1980-08-29
IT1011800B (it) 1977-02-10
NL7405798A (enExample) 1974-11-01
FR2227696A1 (enExample) 1974-11-22
ATA341974A (de) 1977-02-15

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Legal Events

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