FR549706A - - Google Patents

Info

Publication number
FR549706A
FR549706A FR549706DA FR549706A FR 549706 A FR549706 A FR 549706A FR 549706D A FR549706D A FR 549706DA FR 549706 A FR549706 A FR 549706A
Authority
FR
France
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)
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.)
Publication date
Application granted granted Critical
Publication of FR549706A publication Critical patent/FR549706A/fr
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)
  • Interface Circuits In Exchanges (AREA)
FR549706D 1921-04-05 Expired FR549706A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US458973A US1597032A (en) 1921-04-05 1921-04-05 Automatic telephone system

Publications (1)

Publication Number Publication Date
FR549706A true FR549706A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1923-02-17

Family

ID=23822866

Family Applications (1)

Application Number Title Priority Date Filing Date
FR549706D Expired FR549706A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1921-04-05

Country Status (2)

Country Link
US (1) US1597032A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR549706A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3041406A (en) * 1959-12-14 1962-06-26 Gen Dynamics Corp Inward dialing to private branch exchange

Also Published As

Publication number Publication date
US1597032A (en) 1926-08-24

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