FR693979A - Improvements to automatic telephone systems - Google Patents

Improvements to automatic telephone systems

Info

Publication number
FR693979A
FR693979A FR693979DA FR693979A FR 693979 A FR693979 A FR 693979A FR 693979D A FR693979D A FR 693979DA FR 693979 A FR693979 A FR 693979A
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.)
Associated Telephone and Telegraph Co
Original Assignee
Associated Telephone and Telegraph Co
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 Associated Telephone and Telegraph Co filed Critical Associated Telephone and Telegraph Co
Application granted granted Critical
Publication of FR693979A publication Critical patent/FR693979A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/02—Constructional details
    • H04Q1/04—Frames or mounting racks for selector switches; Accessories therefor, e.g. frame cover

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
FR693979D 1930-04-11 1930-04-11 Improvements to automatic telephone systems Expired FR693979A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR693979T 1930-04-11

Publications (1)

Publication Number Publication Date
FR693979A true FR693979A (en) 1930-11-27

Family

ID=9043304

Family Applications (1)

Application Number Title Priority Date Filing Date
FR693979D Expired FR693979A (en) 1930-04-11 1930-04-11 Improvements to automatic telephone systems

Country Status (1)

Country Link
FR (1) FR693979A (en)

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