FR609224A - Improvements to telephone systems - Google Patents

Improvements to telephone systems

Info

Publication number
FR609224A
FR609224A FR609224DA FR609224A FR 609224 A FR609224 A FR 609224A FR 609224D A FR609224D A FR 609224DA FR 609224 A FR609224 A FR 609224A
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
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 Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Application granted granted Critical
Publication of FR609224A publication Critical patent/FR609224A/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)
FR609224D 1925-12-29 1925-12-29 Improvements to telephone systems Expired FR609224A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR609224T 1925-12-29

Publications (1)

Publication Number Publication Date
FR609224A true FR609224A (en) 1926-08-11

Family

ID=8976569

Family Applications (1)

Application Number Title Priority Date Filing Date
FR609224D Expired FR609224A (en) 1925-12-29 1925-12-29 Improvements to telephone systems

Country Status (1)

Country Link
FR (1) FR609224A (en)

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