IT1070672B - Dispositivo formatore di numeri con segnali multifrequenza per apparecchio telefonico a tastiera - Google Patents

Dispositivo formatore di numeri con segnali multifrequenza per apparecchio telefonico a tastiera

Info

Publication number
IT1070672B
IT1070672B IT84148/76A IT8414876A IT1070672B IT 1070672 B IT1070672 B IT 1070672B IT 84148/76 A IT84148/76 A IT 84148/76A IT 8414876 A IT8414876 A IT 8414876A IT 1070672 B IT1070672 B IT 1070672B
Authority
IT
Italy
Prior art keywords
forming device
number forming
multifrequency signals
keyboard telephone
telephone
Prior art date
Application number
IT84148/76A
Other languages
English (en)
Inventor
Pierre Richard
Claude Tessier
Original Assignee
Picart Lebas Telephones
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 Picart Lebas Telephones filed Critical Picart Lebas Telephones
Application granted granted Critical
Publication of IT1070672B publication Critical patent/IT1070672B/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/23—Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
  • Push-Button Switches (AREA)
IT84148/76A 1975-12-17 1976-12-06 Dispositivo formatore di numeri con segnali multifrequenza per apparecchio telefonico a tastiera IT1070672B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7538739A FR2336012A1 (fr) 1975-12-17 1975-12-17 Dispositif de numerotation a multifrequences pour poste telephonique a clavier a touches

Publications (1)

Publication Number Publication Date
IT1070672B true IT1070672B (it) 1985-04-02

Family

ID=9163864

Family Applications (1)

Application Number Title Priority Date Filing Date
IT84148/76A IT1070672B (it) 1975-12-17 1976-12-06 Dispositivo formatore di numeri con segnali multifrequenza per apparecchio telefonico a tastiera

Country Status (7)

Country Link
US (1) US4071715A (it)
BE (1) BE847657A (it)
DE (1) DE2651409A1 (it)
FR (1) FR2336012A1 (it)
GB (1) GB1531299A (it)
IT (1) IT1070672B (it)
NL (1) NL7613028A (it)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE7701358L (sv) * 1977-02-08 1978-08-09 Rca Corp Kontaktslid ingaende i knappsaken hos en telefonapparat

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL242116A (it) * 1958-11-03
DE1205587B (de) * 1963-09-20 1965-11-25 Siemens Ag Tastenwahleinrichtung fuer Fernsprechanlagen
CH514925A (de) * 1970-06-17 1971-10-31 Holzer Patent Ag Aneinanderreihbarer Drucktastenschalter
US3896283A (en) * 1971-09-01 1975-07-22 Syndyne Corp Two-stage push button switch
US3731032A (en) * 1971-10-28 1973-05-01 Us Controls Corp Electrical switch with contact wiping
IT972200B (it) * 1972-10-16 1974-05-20 Sits Soc It Telecom Siemens Tastiera per un dispositivo di se lezione per sistemi di telecomuni cazioni

Also Published As

Publication number Publication date
DE2651409A1 (de) 1977-06-30
GB1531299A (en) 1978-11-08
BE847657A (fr) 1977-02-14
NL7613028A (nl) 1977-06-21
FR2336012A1 (fr) 1977-07-15
FR2336012B1 (it) 1979-10-05
US4071715A (en) 1978-01-31

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