FR1079267A - Development of telephone systems - Google Patents

Development of telephone systems

Info

Publication number
FR1079267A
FR1079267A FR1079267DA FR1079267A FR 1079267 A FR1079267 A FR 1079267A FR 1079267D A FR1079267D A FR 1079267DA FR 1079267 A FR1079267 A FR 1079267A
Authority
FR
France
Prior art keywords
development
telephone systems
telephone
systems
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Application granted granted Critical
Publication of FR1079267A publication Critical patent/FR1079267A/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)
FR1079267D 1952-05-03 1953-04-30 Development of telephone systems Expired FR1079267A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1079267XA 1952-05-03 1952-05-03

Publications (1)

Publication Number Publication Date
FR1079267A true FR1079267A (en) 1954-11-29

Family

ID=22319203

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1079267D Expired FR1079267A (en) 1952-05-03 1953-04-30 Development of telephone systems

Country Status (1)

Country Link
FR (1) FR1079267A (en)

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