FR482976A - Improvement in automatic telephone networks - Google Patents

Improvement in automatic telephone networks

Info

Publication number
FR482976A
FR482976A FR482976A FR482976DA FR482976A FR 482976 A FR482976 A FR 482976A FR 482976 A FR482976 A FR 482976A FR 482976D A FR482976D A FR 482976DA FR 482976 A FR482976 A FR 482976A
Authority
FR
France
Prior art keywords
improvement
telephone networks
automatic telephone
automatic
networks
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
FR482976A
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 Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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 Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR482976A publication Critical patent/FR482976A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite

Landscapes

  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
FR482976A 1914-08-08 1915-08-07 Improvement in automatic telephone networks Expired FR482976A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US855?0314A US1283182A (en) 1914-08-08 1914-08-08 Automatic district telephone system.

Publications (1)

Publication Number Publication Date
FR482976A true FR482976A (en) 1917-05-16

Family

ID=8903703

Family Applications (1)

Application Number Title Priority Date Filing Date
FR482976A Expired FR482976A (en) 1914-08-08 1915-08-07 Improvement in automatic telephone networks

Country Status (2)

Country Link
US (1) US1283182A (en)
FR (1) FR482976A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2554115A (en) * 1947-12-08 1951-05-22 Automatic Elect Lab Automatic director telephone system

Also Published As

Publication number Publication date
US1283182A (en) 1918-10-29

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