FR841582A - Improvements to telephone systems - Google Patents

Improvements to telephone systems

Info

Publication number
FR841582A
FR841582A FR841582DA FR841582A FR 841582 A FR841582 A FR 841582A FR 841582D A FR841582D A FR 841582DA FR 841582 A FR841582 A FR 841582A
Authority
FR
France
Prior art keywords
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.)
Compagnie des Telephones Thomson Houston
Original Assignee
Compagnie des Telephones Thomson Houston
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 des Telephones Thomson Houston filed Critical Compagnie des Telephones Thomson Houston
Application granted granted Critical
Publication of FR841582A publication Critical patent/FR841582A/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
    • H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
    • H04Q3/625—Arrangements in the private branch exchange

Landscapes

  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
FR841582D 1938-01-25 1938-01-25 Improvements to telephone systems Expired FR841582A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR841582T 1938-01-25

Publications (1)

Publication Number Publication Date
FR841582A true FR841582A (en) 1939-05-23

Family

ID=9308687

Family Applications (1)

Application Number Title Priority Date Filing Date
FR841582D Expired FR841582A (en) 1938-01-25 1938-01-25 Improvements to telephone systems

Country Status (1)

Country Link
FR (1) FR841582A (en)

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