FR673623A - Improvements to automatic telephone systems - Google Patents

Improvements to automatic telephone systems

Info

Publication number
FR673623A
FR673623A FR673623DA FR673623A FR 673623 A FR673623 A FR 673623A FR 673623D A FR673623D A FR 673623DA FR 673623 A FR673623 A FR 673623A
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.)
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 FR673623A publication Critical patent/FR673623A/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)
  • Exchange Systems With Centralized Control (AREA)
FR673623D 1928-04-21 1929-04-20 Improvements to automatic telephone systems Expired FR673623A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE310038X 1928-04-21

Publications (1)

Publication Number Publication Date
FR673623A true FR673623A (en) 1930-01-17

Family

ID=20307613

Family Applications (1)

Application Number Title Priority Date Filing Date
FR673623D Expired FR673623A (en) 1928-04-21 1929-04-20 Improvements to automatic telephone systems

Country Status (2)

Country Link
FR (1) FR673623A (en)
GB (1) GB310038A (en)

Also Published As

Publication number Publication date
GB310038A (en) 1930-05-29

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