FR714477A - Improvements to automatic telephone exchanges - Google Patents

Improvements to automatic telephone exchanges

Info

Publication number
FR714477A
FR714477A FR714477DA FR714477A FR 714477 A FR714477 A FR 714477A FR 714477D A FR714477D A FR 714477DA FR 714477 A FR714477 A FR 714477A
Authority
FR
France
Prior art keywords
automatic telephone
telephone exchanges
exchanges
automatic
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Application granted granted Critical
Publication of FR714477A publication Critical patent/FR714477A/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)
FR714477D 1930-03-15 1931-03-10 Improvements to automatic telephone exchanges Expired FR714477A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE714477X 1930-03-15

Publications (1)

Publication Number Publication Date
FR714477A true FR714477A (en) 1931-11-14

Family

ID=20315807

Family Applications (1)

Application Number Title Priority Date Filing Date
FR714477D Expired FR714477A (en) 1930-03-15 1931-03-10 Improvements to automatic telephone exchanges

Country Status (1)

Country Link
FR (1) FR714477A (en)

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