FR707755A - Improvements to automatic telephone systems - Google Patents

Improvements to automatic telephone systems

Info

Publication number
FR707755A
FR707755A FR707755DA FR707755A FR 707755 A FR707755 A FR 707755A FR 707755D A FR707755D A FR 707755DA FR 707755 A FR707755 A FR 707755A
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 FR707755A publication Critical patent/FR707755A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
FR707755D 1930-03-22 1930-03-22 Improvements to automatic telephone systems Expired FR707755A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR707755T 1930-03-22

Publications (1)

Publication Number Publication Date
FR707755A true FR707755A (en) 1931-07-15

Family

ID=9068530

Family Applications (1)

Application Number Title Priority Date Filing Date
FR707755D Expired FR707755A (en) 1930-03-22 1930-03-22 Improvements to automatic telephone systems

Country Status (1)

Country Link
FR (1) FR707755A (en)

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