FR556376A - Installation de bureau central téléphonique, semi-automatique - Google Patents

Installation de bureau central téléphonique, semi-automatique

Info

Publication number
FR556376A
FR556376A FR556376DA FR556376A FR 556376 A FR556376 A FR 556376A FR 556376D A FR556376D A FR 556376DA FR 556376 A FR556376 A FR 556376A
Authority
FR
France
Prior art keywords
semi
automatic
central office
telephone central
office installation
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
English (en)
Inventor
Maurice Hauzy
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 FR556376A publication Critical patent/FR556376A/fr
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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR556376D 1921-12-30 1921-12-30 Installation de bureau central téléphonique, semi-automatique Expired FR556376A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR556376T 1921-12-30

Publications (1)

Publication Number Publication Date
FR556376A true FR556376A (fr) 1923-07-19

Family

ID=8940123

Family Applications (1)

Application Number Title Priority Date Filing Date
FR556376D Expired FR556376A (fr) 1921-12-30 1921-12-30 Installation de bureau central téléphonique, semi-automatique

Country Status (1)

Country Link
FR (1) FR556376A (fr)

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