CH422903A - Circuit arrangement for a telephone system with keypad selection - Google Patents

Circuit arrangement for a telephone system with keypad selection

Info

Publication number
CH422903A
CH422903A CH1391864A CH1391864A CH422903A CH 422903 A CH422903 A CH 422903A CH 1391864 A CH1391864 A CH 1391864A CH 1391864 A CH1391864 A CH 1391864A CH 422903 A CH422903 A CH 422903A
Authority
CH
Switzerland
Prior art keywords
circuit arrangement
telephone system
keypad selection
keypad
selection
Prior art date
Application number
CH1391864A
Other languages
German (de)
Inventor
Fath Wilhelm
Franchi Bruno
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Publication of CH422903A publication Critical patent/CH422903A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
CH1391864A 1963-10-29 1964-10-27 Circuit arrangement for a telephone system with keypad selection CH422903A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1963S0088073 DE1242716B (en) 1963-10-29 1963-10-29 Circuit arrangement for telephone systems with keyboard selection through different potential connection

Publications (1)

Publication Number Publication Date
CH422903A true CH422903A (en) 1966-10-31

Family

ID=7514215

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1391864A CH422903A (en) 1963-10-29 1964-10-27 Circuit arrangement for a telephone system with keypad selection

Country Status (6)

Country Link
BE (1) BE655028A (en)
CH (1) CH422903A (en)
DE (1) DE1242716B (en)
GB (1) GB1025710A (en)
NL (1) NL149050B (en)
SE (1) SE307602B (en)

Also Published As

Publication number Publication date
NL6412545A (en) 1965-05-03
SE307602B (en) 1969-01-13
NL149050B (en) 1976-03-15
GB1025710A (en) 1966-04-14
BE655028A (en) 1965-04-29
DE1242716B (en) 1967-06-22

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