AT339382B - PUSH BUTTON SWITCH - Google Patents

PUSH BUTTON SWITCH

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)
Other versions
ATA341974A (en
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 DE19732321897 external-priority patent/DE2321897C3/en
Priority claimed from DE19732321794 external-priority patent/DE2321794B2/en
Application filed by Deutsche Fernsprecher Gmbh filed Critical Deutsche Fernsprecher Gmbh
Publication of ATA341974A publication Critical patent/ATA341974A/en
Application granted granted Critical
Publication of AT339382B publication Critical patent/AT339382B/en

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 PUSH BUTTON SWITCH AT339382B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19732321897 DE2321897C3 (en) 1973-04-30 Circuit arrangement for deriving a small DC voltage occurring as a voltage drop in a current-carrying loop
DE19732321794 DE2321794B2 (en) 1973-04-30 1973-04-30 Touch-dial number switch for telephone subscriber sets

Publications (2)

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

Family

ID=25765065

Family Applications (1)

Application Number Title Priority Date Filing Date
AT341974A AT339382B (en) 1973-04-30 1974-04-25 PUSH BUTTON SWITCH

Country Status (4)

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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE7608076L (en) * 1975-07-25 1977-01-26 Carlo Baldoni TEN NUMBER PROVIDED, DIGITAL NUMBER RECEIVER OF KEY TYPE

Also Published As

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

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Legal Events

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