BE816008A - Appareil telephonique a boutons-poussoirs - Google Patents

Appareil telephonique a boutons-poussoirs

Info

Publication number
BE816008A
BE816008A BE145157A BE145157A BE816008A BE 816008 A BE816008 A BE 816008A BE 145157 A BE145157 A BE 145157A BE 145157 A BE145157 A BE 145157A BE 816008 A BE816008 A BE 816008A
Authority
BE
Belgium
Prior art keywords
push
telephone device
button telephone
button
telephone
Prior art date
Application number
BE145157A
Other languages
English (en)
French (fr)
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 filed Critical
Publication of BE816008A publication Critical patent/BE816008A/xx

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)
  • Telephone Set Structure (AREA)
BE145157A 1973-06-08 1974-06-06 Appareil telephonique a boutons-poussoirs BE816008A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2739273A GB1411910A (en) 1973-06-08 1973-06-08 Push button telephone instruments

Publications (1)

Publication Number Publication Date
BE816008A true BE816008A (fr) 1974-12-06

Family

ID=10258849

Family Applications (1)

Application Number Title Priority Date Filing Date
BE145157A BE816008A (fr) 1973-06-08 1974-06-06 Appareil telephonique a boutons-poussoirs

Country Status (8)

Country Link
JP (1) JPS5431765B2 (cs)
BE (1) BE816008A (cs)
CA (1) CA1001787A (cs)
DE (1) DE2427584A1 (cs)
FR (1) FR2232889B1 (cs)
GB (1) GB1411910A (cs)
IT (1) IT1011936B (cs)
SE (1) SE7407345L (cs)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53109922A (en) * 1977-01-29 1978-09-26 Kureha Chem Ind Co Ltd Preparation of anti-tumor polysaccharides
JPS53109915A (en) * 1977-01-29 1978-09-26 Kureha Chem Ind Co Ltd Preparation of anti-tumor polysaccharides
JPS53109914A (en) * 1977-01-29 1978-09-26 Kureha Chem Ind Co Ltd Preparation of anti-tumor polysaccharides
DE3037947C2 (de) * 1980-10-08 1983-01-05 Krone Gmbh, 1000 Berlin Taste zum Wählen bei aufgelegtem Handapparat mittels einer Tastatur und zum Lauthören

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2818558A (en) * 1954-06-17 1957-12-31 Bell Telephone Labor Inc Key pulsing circuit
US3614331A (en) * 1968-09-30 1971-10-19 Mkh Inc Keyboard pulse generator including a locking plate for use in telephone dialing

Also Published As

Publication number Publication date
FR2232889A1 (cs) 1975-01-03
JPS5431765B2 (cs) 1979-10-09
GB1411910A (en) 1975-10-29
JPS5034103A (cs) 1975-04-02
DE2427584A1 (de) 1975-01-02
CA1001787A (en) 1976-12-14
SE7407345L (cs) 1974-12-09
IT1011936B (it) 1977-02-10
FR2232889B1 (cs) 1977-09-30

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