CH549317A - Waehl-einrichtung bei telephonapparaten. - Google Patents

Waehl-einrichtung bei telephonapparaten.

Info

Publication number
CH549317A
CH549317A CH270572A CH270572A CH549317A CH 549317 A CH549317 A CH 549317A CH 270572 A CH270572 A CH 270572A CH 270572 A CH270572 A CH 270572A CH 549317 A CH549317 A CH 549317A
Authority
CH
Switzerland
Prior art keywords
selection device
telephone sets
telephone
sets
selection
Prior art date
Application number
CH270572A
Other languages
English (en)
Original Assignee
Eichenberger Rolf
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 Eichenberger Rolf filed Critical Eichenberger Rolf
Priority to CH270572A priority Critical patent/CH549317A/de
Priority to DE19722221775 priority patent/DE2221775A1/de
Priority to NL7214284A priority patent/NL7214284A/xx
Priority to DE19732355301 priority patent/DE2355301A1/de
Publication of CH549317A publication Critical patent/CH549317A/de

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
    • H04M1/22—Illumination; Arrangements for improving the visibility of characters on dials

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Audible And Visible Signals (AREA)
CH270572A 1972-02-25 1972-02-25 Waehl-einrichtung bei telephonapparaten. CH549317A (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CH270572A CH549317A (de) 1972-02-25 1972-02-25 Waehl-einrichtung bei telephonapparaten.
DE19722221775 DE2221775A1 (de) 1972-02-25 1972-05-04 Neuartiges waehlsystem bei telephonapparaten
NL7214284A NL7214284A (de) 1972-02-25 1972-10-20
DE19732355301 DE2355301A1 (de) 1972-02-25 1973-11-06 Neuartiges waehlsystem bei telephonapparaten

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH270572A CH549317A (de) 1972-02-25 1972-02-25 Waehl-einrichtung bei telephonapparaten.

Publications (1)

Publication Number Publication Date
CH549317A true CH549317A (de) 1974-05-15

Family

ID=4239739

Family Applications (1)

Application Number Title Priority Date Filing Date
CH270572A CH549317A (de) 1972-02-25 1972-02-25 Waehl-einrichtung bei telephonapparaten.

Country Status (3)

Country Link
CH (1) CH549317A (de)
DE (1) DE2221775A1 (de)
NL (1) NL7214284A (de)

Also Published As

Publication number Publication date
NL7214284A (de) 1973-08-28
DE2221775A1 (de) 1973-09-06

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Legal Events

Date Code Title Description
PL Patent ceased