FR2120248A5 - - Google Patents

Info

Publication number
FR2120248A5
FR2120248A5 FR7043676A FR7043676A FR2120248A5 FR 2120248 A5 FR2120248 A5 FR 2120248A5 FR 7043676 A FR7043676 A FR 7043676A FR 7043676 A FR7043676 A FR 7043676A FR 2120248 A5 FR2120248 A5 FR 2120248A5
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
FR7043676A
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Priority to FR7043676A priority Critical patent/FR2120248A5/fr
Application granted granted Critical
Publication of FR2120248A5 publication Critical patent/FR2120248A5/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
FR7043676A 1970-12-04 1970-12-04 Expired FR2120248A5 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7043676A FR2120248A5 (fr) 1970-12-04 1970-12-04

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7043676A FR2120248A5 (fr) 1970-12-04 1970-12-04

Publications (1)

Publication Number Publication Date
FR2120248A5 true FR2120248A5 (fr) 1972-08-18

Family

ID=9065236

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7043676A Expired FR2120248A5 (fr) 1970-12-04 1970-12-04

Country Status (1)

Country Link
FR (1) FR2120248A5 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2222811A1 (fr) * 1973-03-22 1974-10-18 Western Electric Co
FR2536614A1 (fr) * 1982-11-18 1984-05-25 Laroche Jean Louis Dispositif d'interconnexion de lignes de transmission notamment de lignes telephoniques, utilisant des amplificateurs differentiels

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2222811A1 (fr) * 1973-03-22 1974-10-18 Western Electric Co
FR2536614A1 (fr) * 1982-11-18 1984-05-25 Laroche Jean Louis Dispositif d'interconnexion de lignes de transmission notamment de lignes telephoniques, utilisant des amplificateurs differentiels
EP0112734A1 (fr) * 1982-11-18 1984-07-04 Jean-Louis Laroche Dispositif d'interconnexion de lignes de transmission notamment de lignes téléphoniques, utilisant des amplificateurs différentiels

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Legal Events

Date Code Title Description
ST Notification of lapse