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FR709444A - Improvements to semi-automatic telephone systems - Google Patents

Improvements to semi-automatic telephone systems

Info

Publication number
FR709444A
FR709444A FR709444DA FR709444A FR 709444 A FR709444 A FR 709444A FR 709444D A FR709444D A FR 709444DA FR 709444 A FR709444 A FR 709444A
Authority
FR
France
Prior art keywords
semi
telephone systems
automatic telephone
automatic
systems
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 FR709444A publication Critical patent/FR709444A/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)
FR709444D 1930-04-15 1930-04-15 Improvements to semi-automatic telephone systems Expired FR709444A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR709444T 1930-04-15

Publications (1)

Publication Number Publication Date
FR709444A true FR709444A (en) 1931-08-06

Family

ID=9069479

Family Applications (1)

Application Number Title Priority Date Filing Date
FR709444D Expired FR709444A (en) 1930-04-15 1930-04-15 Improvements to semi-automatic telephone systems

Country Status (1)

Country Link
FR (1) FR709444A (en)

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