FR716329A - Improvements to automatic telephone systems - Google Patents

Improvements to automatic telephone systems

Info

Publication number
FR716329A
FR716329A FR716329DA FR716329A FR 716329 A FR716329 A FR 716329A FR 716329D A FR716329D A FR 716329DA FR 716329 A FR716329 A FR 716329A
Authority
FR
France
Prior art keywords
telephone systems
automatic telephone
automatic
systems
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)
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.)
Compagnie des Telephones Thomson Houston
Original Assignee
Compagnie des Telephones Thomson Houston
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 Compagnie des Telephones Thomson Houston filed Critical Compagnie des Telephones Thomson Houston
Application granted granted Critical
Publication of FR716329A publication Critical patent/FR716329A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite

Landscapes

  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
FR716329D 1930-09-09 1930-09-09 Improvements to automatic telephone systems Expired FR716329A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR716329T 1930-09-09

Publications (1)

Publication Number Publication Date
FR716329A true FR716329A (en) 1931-12-18

Family

ID=9089489

Family Applications (1)

Application Number Title Priority Date Filing Date
FR716329D Expired FR716329A (en) 1930-09-09 1930-09-09 Improvements to automatic telephone systems

Country Status (1)

Country Link
FR (1) FR716329A (en)

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