FR780795A - Coupling device for telephone systems with main and secondary offices and operation with selectors - Google Patents

Coupling device for telephone systems with main and secondary offices and operation with selectors

Info

Publication number
FR780795A
FR780795A FR780795DA FR780795A FR 780795 A FR780795 A FR 780795A FR 780795D A FR780795D A FR 780795DA FR 780795 A FR780795 A FR 780795A
Authority
FR
France
Prior art keywords
selectors
main
coupling device
telephone systems
offices
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 FR780795A publication Critical patent/FR780795A/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)
FR780795D 1934-07-13 1934-08-14 Coupling device for telephone systems with main and secondary offices and operation with selectors Expired FR780795A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2070876X 1934-07-13

Publications (1)

Publication Number Publication Date
FR780795A true FR780795A (en) 1935-05-03

Family

ID=7983548

Family Applications (1)

Application Number Title Priority Date Filing Date
FR780795D Expired FR780795A (en) 1934-07-13 1934-08-14 Coupling device for telephone systems with main and secondary offices and operation with selectors

Country Status (2)

Country Link
US (1) US2070876A (en)
FR (1) FR780795A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2581287A (en) * 1946-02-23 1952-01-01 Automatic Elect Lab Automatic charge-recording telephone system

Also Published As

Publication number Publication date
US2070876A (en) 1937-02-16

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