IT1025577B - KEYS AND KEYBOARD FOR TELECOMMUNICATIONS SYSTEMS SPECIES FOR TELEFONIC SYSTEMS - Google Patents

KEYS AND KEYBOARD FOR TELECOMMUNICATIONS SYSTEMS SPECIES FOR TELEFONIC SYSTEMS

Info

Publication number
IT1025577B
IT1025577B IT2928474A IT2928474A IT1025577B IT 1025577 B IT1025577 B IT 1025577B IT 2928474 A IT2928474 A IT 2928474A IT 2928474 A IT2928474 A IT 2928474A IT 1025577 B IT1025577 B IT 1025577B
Authority
IT
Italy
Prior art keywords
systems
telefonic
keys
keyboard
species
Prior art date
Application number
IT2928474A
Other languages
Italian (it)
Original Assignee
Deutsche Telephonwerk Kabel
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
Priority claimed from DE19732357887 external-priority patent/DE2357887C3/en
Application filed by Deutsche Telephonwerk Kabel filed Critical Deutsche Telephonwerk Kabel
Application granted granted Critical
Publication of IT1025577B publication Critical patent/IT1025577B/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
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
IT2928474A 1973-11-17 1974-11-11 KEYS AND KEYBOARD FOR TELECOMMUNICATIONS SYSTEMS SPECIES FOR TELEFONIC SYSTEMS IT1025577B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732357887 DE2357887C3 (en) 1973-11-17 Keys and keypad for telecommunications, in particular telephone systems

Publications (1)

Publication Number Publication Date
IT1025577B true IT1025577B (en) 1978-08-30

Family

ID=5898601

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2928474A IT1025577B (en) 1973-11-17 1974-11-11 KEYS AND KEYBOARD FOR TELECOMMUNICATIONS SYSTEMS SPECIES FOR TELEFONIC SYSTEMS

Country Status (7)

Country Link
BE (1) BE818661A (en)
FR (1) FR2251901A1 (en)
GB (1) GB1462447A (en)
IE (1) IE40116B1 (en)
IT (1) IT1025577B (en)
LU (1) LU70751A1 (en)
NL (1) NL7411257A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3135655A1 (en) * 1981-09-09 1983-03-24 Rafi Gmbh & Co Elektrotechnische Spezialfabrik, 7981 Berg "PUSH BUTTON FOR ELECTRICAL DEVICES"
JPS58214231A (en) * 1982-05-24 1983-12-13 イリノイ・ツ−ル・ワ−クス・インコ−ポレイテツド Liquid resistant electric switch
DE19954098C1 (en) * 1999-11-10 2001-02-01 Siemens Ag Pushbutton with changeover contact function

Also Published As

Publication number Publication date
BE818661A (en) 1974-12-02
DE2357887B2 (en) 1976-12-09
LU70751A1 (en) 1975-01-02
IE40116B1 (en) 1979-03-14
NL7411257A (en) 1975-05-21
FR2251901A1 (en) 1975-06-13
GB1462447A (en) 1977-01-26
IE40116L (en) 1975-05-17
DE2357887A1 (en) 1975-05-28

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