FR624124A - Improvements to automatic or semi-automatic central office telephone systems - Google Patents

Improvements to automatic or semi-automatic central office telephone systems

Info

Publication number
FR624124A
FR624124A FR624124DA FR624124A FR 624124 A FR624124 A FR 624124A FR 624124D A FR624124D A FR 624124DA FR 624124 A FR624124 A FR 624124A
Authority
FR
France
Prior art keywords
automatic
semi
central office
telephone systems
office 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.)
Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
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 Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Application granted granted Critical
Publication of FR624124A publication Critical patent/FR624124A/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)
FR624124D 1925-11-13 1926-11-05 Improvements to automatic or semi-automatic central office telephone systems Expired FR624124A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2867425A GB265695A (en) 1925-11-13 1925-11-13 Improvements in automatic and semi-automatic telephone systems

Publications (1)

Publication Number Publication Date
FR624124A true FR624124A (en) 1927-07-08

Family

ID=10279325

Family Applications (1)

Application Number Title Priority Date Filing Date
FR624124D Expired FR624124A (en) 1925-11-13 1926-11-05 Improvements to automatic or semi-automatic central office telephone systems

Country Status (2)

Country Link
FR (1) FR624124A (en)
GB (1) GB265695A (en)

Also Published As

Publication number Publication date
GB265695A (en) 1927-02-14

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