FR672514A - Installation téléphonique - Google Patents

Installation téléphonique

Info

Publication number
FR672514A
FR672514A FR672514DA FR672514A FR 672514 A FR672514 A FR 672514A FR 672514D A FR672514D A FR 672514DA FR 672514 A FR672514 A FR 672514A
Authority
FR
France
Prior art keywords
telephone installation
telephone
installation
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
English (en)
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.)
Associated Telephone and Telegraph Co
Original Assignee
Associated Telephone and Telegraph Co
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 Associated Telephone and Telegraph Co filed Critical Associated Telephone and Telegraph Co
Application granted granted Critical
Publication of FR672514A publication Critical patent/FR672514A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0008—Selecting arrangements using relay selectors in the switching stages

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
FR672514D 1927-06-20 1928-05-25 Installation téléphonique Expired FR672514A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US199917A US1752543A (en) 1927-06-20 1927-06-20 Telephone system

Publications (1)

Publication Number Publication Date
FR672514A true FR672514A (fr) 1929-12-30

Family

ID=22739554

Family Applications (1)

Application Number Title Priority Date Filing Date
FR672514D Expired FR672514A (fr) 1927-06-20 1928-05-25 Installation téléphonique

Country Status (3)

Country Link
US (1) US1752543A (fr)
FR (1) FR672514A (fr)
GB (1) GB292498A (fr)

Also Published As

Publication number Publication date
US1752543A (en) 1930-04-01
GB292498A (en) 1929-07-29

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