IT1011936B - Apparecchio telefonico a tastiera - Google Patents

Apparecchio telefonico a tastiera

Info

Publication number
IT1011936B
IT1011936B IT6880574A IT6880574A IT1011936B IT 1011936 B IT1011936 B IT 1011936B IT 6880574 A IT6880574 A IT 6880574A IT 6880574 A IT6880574 A IT 6880574A IT 1011936 B IT1011936 B IT 1011936B
Authority
IT
Italy
Prior art keywords
telephone device
keypad telephone
keypad
telephone
Prior art date
Application number
IT6880574A
Other languages
English (en)
Original Assignee
Pye Ltd
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 Pye Ltd filed Critical Pye Ltd
Application granted granted Critical
Publication of IT1011936B publication Critical patent/IT1011936B/it

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)
IT6880574A 1973-06-08 1974-06-07 Apparecchio telefonico a tastiera IT1011936B (it)

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
IT1011936B true IT1011936B (it) 1977-02-10

Family

ID=10258849

Family Applications (1)

Application Number Title Priority Date Filing Date
IT6880574A IT1011936B (it) 1973-06-08 1974-06-07 Apparecchio telefonico a tastiera

Country Status (8)

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

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53109914A (en) * 1977-01-29 1978-09-26 Kureha Chem Ind Co Ltd Preparation of anti-tumor polysaccharides
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
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
BE816008A (fr) 1974-12-06
FR2232889A1 (it) 1975-01-03
JPS5431765B2 (it) 1979-10-09
SE7407345L (it) 1974-12-09
GB1411910A (en) 1975-10-29
FR2232889B1 (it) 1977-09-30
JPS5034103A (it) 1975-04-02
DE2427584A1 (de) 1975-01-02
CA1001787A (en) 1976-12-14

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