BE818661A - KEYS AND KEYPAD FOR TELECOMMUNICATION SYSTEMS - Google Patents

KEYS AND KEYPAD FOR TELECOMMUNICATION SYSTEMS

Info

Publication number
BE818661A
BE818661A BE147441A BE147441A BE818661A BE 818661 A BE818661 A BE 818661A BE 147441 A BE147441 A BE 147441A BE 147441 A BE147441 A BE 147441A BE 818661 A BE818661 A BE 818661A
Authority
BE
Belgium
Prior art keywords
keypad
keys
telecommunication systems
telecommunication
systems
Prior art date
Application number
BE147441A
Other languages
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
Priority claimed from DE19732357887 external-priority patent/DE2357887C3/en
Application filed filed Critical
Publication of BE818661A publication Critical patent/BE818661A/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
BE147441A 1973-11-17 1974-08-09 KEYS AND KEYPAD FOR TELECOMMUNICATION SYSTEMS BE818661A (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
BE818661A true BE818661A (en) 1974-12-02

Family

ID=5898601

Family Applications (1)

Application Number Title Priority Date Filing Date
BE147441A BE818661A (en) 1973-11-17 1974-08-09 KEYS AND KEYPAD FOR TELECOMMUNICATION 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"
GB2120853A (en) * 1982-05-24 1983-12-07 Illinois Tool Works Liquid contaminant resistant electric switches
DE19954098C1 (en) * 1999-11-10 2001-02-01 Siemens Ag Pushbutton with changeover contact function

Also Published As

Publication number Publication date
NL7411257A (en) 1975-05-21
IT1025577B (en) 1978-08-30
IE40116L (en) 1975-05-17
DE2357887A1 (en) 1975-05-28
FR2251901A1 (en) 1975-06-13
IE40116B1 (en) 1979-03-14
LU70751A1 (en) 1975-01-02
GB1462447A (en) 1977-01-26
DE2357887B2 (en) 1976-12-09

Similar Documents

Publication Publication Date Title
NL164404C (en) KEYBOARD SWITCHING.
BE806007A (en) KEYPAD FOR A SELECTION DEVICE FOR TELECOMMUNICATION SYSTEMS
FR2294485A1 (en) SWITCHING KEYPAD
BE863476A (en) KEYBOARD AND SWITCHING DEVICE FOR SUCH KEYBOARD
FR1513079A (en) Switching mechanism for a keyboard
BE823387A (en) DATA INPUT KEYPAD
CH536518A (en) Keypad key switch
FR2304161A1 (en) ELECTRICAL SWITCH, ESPECIALLY FOR ELECTRONIC CALCULATOR KEYS
BE818661A (en) KEYS AND KEYPAD FOR TELECOMMUNICATION SYSTEMS
IT1034648B (en) KEYPAD TELEPHONE SYSTEM
ZA75400B (en) Electronic time switching telephone system
BE818163A (en) KEY SWITCH SELECTOR FOR TELEPHONE DEVICES
CH549835A (en) KEYPAD KEY SWITCH.
BE791256A (en) SWITCH ESPECIALLY FOR TELECOMMUNICATIONS INSTALLATIONS
BE813774A (en) TELEPHONE DEVICES AND REMOVABLE COVERS FOR THESE DEVICES
IT1011936B (en) KEYPAD TELEPHONE DEVICE
JPS5294005A (en) Key telephone system
NL7611889A (en) TELEPHONE SWITCHING CHAIN AND SELF-CONNECTING SWITCH CONTAINING SUCH CHAIN.
BE794054A (en) KEYPAD
JPS52129205A (en) Device for limiting originating call for touch tone telephone set
FR2279280A1 (en) KEYPAD MODULE FOR TELEPHONE DEVICES
JPS5345101A (en) Key telephone system
JPS5330802A (en) Key telephone system
JPS52136509A (en) Key telephone system
ZA743457B (en) Register for telephone switching systems