IT1114143B - KEYBOARD FOR TELECOMMUNICATIONS SYSTEMS - Google Patents

KEYBOARD FOR TELECOMMUNICATIONS SYSTEMS

Info

Publication number
IT1114143B
IT1114143B IT2743877A IT2743877A IT1114143B IT 1114143 B IT1114143 B IT 1114143B IT 2743877 A IT2743877 A IT 2743877A IT 2743877 A IT2743877 A IT 2743877A IT 1114143 B IT1114143 B IT 1114143B
Authority
IT
Italy
Prior art keywords
keyboard
telecommunications systems
telecommunications
systems
Prior art date
Application number
IT2743877A
Other languages
Italian (it)
Inventor
Egidio Marcotti
Sergio Fare
Original Assignee
Sits Soc It Telecom Siemens
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 Sits Soc It Telecom Siemens filed Critical Sits Soc It Telecom Siemens
Priority to IT2743877A priority Critical patent/IT1114143B/en
Priority to BR7805287A priority patent/BR7805287A/en
Priority to DE19782839630 priority patent/DE2839630A1/en
Application granted granted Critical
Publication of IT1114143B publication Critical patent/IT1114143B/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
IT2743877A 1977-09-12 1977-09-12 KEYBOARD FOR TELECOMMUNICATIONS SYSTEMS IT1114143B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
IT2743877A IT1114143B (en) 1977-09-12 1977-09-12 KEYBOARD FOR TELECOMMUNICATIONS SYSTEMS
BR7805287A BR7805287A (en) 1977-09-12 1978-08-17 KEYBOARD FOR TELECOMMUNICATION SYSTEMS
DE19782839630 DE2839630A1 (en) 1977-09-12 1978-09-12 Pushbutton keyboard for telephone sets - has cams moving slide in base guides, which operates spring contacts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2743877A IT1114143B (en) 1977-09-12 1977-09-12 KEYBOARD FOR TELECOMMUNICATIONS SYSTEMS

Publications (1)

Publication Number Publication Date
IT1114143B true IT1114143B (en) 1986-01-27

Family

ID=11221641

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2743877A IT1114143B (en) 1977-09-12 1977-09-12 KEYBOARD FOR TELECOMMUNICATIONS SYSTEMS

Country Status (3)

Country Link
BR (1) BR7805287A (en)
DE (1) DE2839630A1 (en)
IT (1) IT1114143B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2935557C2 (en) * 1979-09-03 1983-03-31 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt Pressure switches for communications engineering.
US5703758A (en) * 1996-09-13 1997-12-30 Ericsson Inc. Electronic device casing including living spring button and method

Also Published As

Publication number Publication date
BR7805287A (en) 1979-04-17
DE2839630A1 (en) 1979-04-12

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