CH548712A - NUMBER SWITCHES FOR REMOTE INDICATORS, IN PARTICULAR TELEPHONES - Google Patents

NUMBER SWITCHES FOR REMOTE INDICATORS, IN PARTICULAR TELEPHONES

Info

Publication number
CH548712A
CH548712A CH415173A CH415173A CH548712A CH 548712 A CH548712 A CH 548712A CH 415173 A CH415173 A CH 415173A CH 415173 A CH415173 A CH 415173A CH 548712 A CH548712 A CH 548712A
Authority
CH
Switzerland
Prior art keywords
number switches
remote indicators
particular telephones
telephones
indicators
Prior art date
Application number
CH415173A
Other languages
German (de)
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Publication of CH548712A publication Critical patent/CH548712A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Toys (AREA)
  • Telephone Set Structure (AREA)
CH415173A 1972-05-24 1973-03-22 NUMBER SWITCHES FOR REMOTE INDICATORS, IN PARTICULAR TELEPHONES CH548712A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2225225A DE2225225B2 (en) 1972-05-24 1972-05-24 Number switches for telecommunications, in particular telephones

Publications (1)

Publication Number Publication Date
CH548712A true CH548712A (en) 1974-04-30

Family

ID=5845744

Family Applications (1)

Application Number Title Priority Date Filing Date
CH415173A CH548712A (en) 1972-05-24 1973-03-22 NUMBER SWITCHES FOR REMOTE INDICATORS, IN PARTICULAR TELEPHONES

Country Status (11)

Country Link
AR (1) AR194560A1 (en)
BE (1) BE799983A (en)
BR (1) BR7303834D0 (en)
CH (1) CH548712A (en)
DE (1) DE2225225B2 (en)
FR (1) FR2185903A1 (en)
GB (1) GB1377338A (en)
IT (1) IT987785B (en)
LU (1) LU67638A1 (en)
NL (1) NL7306108A (en)
ZA (1) ZA732876B (en)

Also Published As

Publication number Publication date
DE2225225B2 (en) 1974-04-18
AR194560A1 (en) 1973-07-23
LU67638A1 (en) 1973-07-26
ZA732876B (en) 1974-03-27
DE2225225A1 (en) 1973-12-06
IT987785B (en) 1975-03-20
BE799983A (en) 1973-11-26
GB1377338A (en) 1974-12-11
FR2185903A1 (en) 1974-01-04
NL7306108A (en) 1973-11-27
BR7303834D0 (en) 1973-12-20

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Legal Events

Date Code Title Description
PL Patent ceased