FR720400A - Telephone communications counter - Google Patents

Telephone communications counter

Info

Publication number
FR720400A
FR720400A FR720400DA FR720400A FR 720400 A FR720400 A FR 720400A FR 720400D A FR720400D A FR 720400DA FR 720400 A FR720400 A FR 720400A
Authority
FR
France
Prior art keywords
telephone communications
communications counter
counter
telephone
communications
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
Other languages
French (fr)
Inventor
Herbert Paul Amphlett
Ernest William White
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 filed Critical
Application granted granted Critical
Publication of FR720400A publication Critical patent/FR720400A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/56—Arrangements for indicating or recording the called number at the calling subscriber's set

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR720400D 1931-07-22 1931-07-22 Telephone communications counter Expired FR720400A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR720400T 1931-07-22

Publications (1)

Publication Number Publication Date
FR720400A true FR720400A (en) 1932-02-18

Family

ID=9093103

Family Applications (1)

Application Number Title Priority Date Filing Date
FR720400D Expired FR720400A (en) 1931-07-22 1931-07-22 Telephone communications counter

Country Status (1)

Country Link
FR (1) FR720400A (en)

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