FR338768A - Semi-automatic telephone system - Google Patents

Semi-automatic telephone system

Info

Publication number
FR338768A
FR338768A FR338768DA FR338768A FR 338768 A FR338768 A FR 338768A FR 338768D A FR338768D A FR 338768DA FR 338768 A FR338768 A FR 338768A
Authority
FR
France
Prior art keywords
semi
telephone system
automatic telephone
automatic
telephone
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
Ernest August Faller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR338768A publication Critical patent/FR338768A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/60—Semi-automatic systems, i.e. in which the numerical selection of the outgoing line is under the control of an operator
    • H04M3/64—Arrangements for signalling the number or class of the calling line to the operator

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR338768D 1903-09-19 1903-09-19 Semi-automatic telephone system Expired FR338768A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR338768T 1903-09-19

Publications (1)

Publication Number Publication Date
FR338768A true FR338768A (en) 1904-07-04

Family

ID=1388028

Family Applications (1)

Application Number Title Priority Date Filing Date
FR338768D Expired FR338768A (en) 1903-09-19 1903-09-19 Semi-automatic telephone system

Country Status (1)

Country Link
FR (1) FR338768A (en)

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