FR620971A - Improvements to automatic telephone systems - Google Patents

Improvements to automatic telephone systems

Info

Publication number
FR620971A
FR620971A FR620971DA FR620971A FR 620971 A FR620971 A FR 620971A FR 620971D A FR620971D A FR 620971DA FR 620971 A FR620971 A FR 620971A
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 FR620971A publication Critical patent/FR620971A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
FR620971D 1925-12-29 1925-12-29 Improvements to automatic telephone systems Expired FR620971A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR620971T 1925-12-29

Publications (1)

Publication Number Publication Date
FR620971A true FR620971A (en) 1927-05-03

Family

ID=8984771

Family Applications (1)

Application Number Title Priority Date Filing Date
FR620971D Expired FR620971A (en) 1925-12-29 1925-12-29 Improvements to automatic telephone systems

Country Status (1)

Country Link
FR (1) FR620971A (en)

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