FR1122352A - Poste téléphonique combiné - Google Patents

Poste téléphonique combiné

Info

Publication number
FR1122352A
FR1122352A FR1122352DA FR1122352A FR 1122352 A FR1122352 A FR 1122352A FR 1122352D A FR1122352D A FR 1122352DA FR 1122352 A FR1122352 A FR 1122352A
Authority
FR
France
Prior art keywords
telephone set
combined telephone
combined
telephone
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)
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Application granted granted Critical
Publication of FR1122352A publication Critical patent/FR1122352A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
FR1122352D 1954-07-16 1955-02-21 Poste téléphonique combiné Expired FR1122352A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US443792A US2801287A (en) 1954-07-16 1954-07-16 Control of regular and distant talking subscribers sets

Publications (1)

Publication Number Publication Date
FR1122352A true FR1122352A (fr) 1956-09-05

Family

ID=23762223

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1122352D Expired FR1122352A (fr) 1954-07-16 1955-02-21 Poste téléphonique combiné

Country Status (6)

Country Link
US (1) US2801287A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS331003B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BE (1) BE539848A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE1032791B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR1122352A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB777184A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2895007A (en) * 1955-11-03 1959-07-14 Ericsson Telefon Ab L M Telephone installation
US2877302A (en) * 1956-04-23 1959-03-10 Gai Tronics Corp Telephone equipment
BE560891A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1956-10-05
BE560927A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1956-10-08
BE563970A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1957-01-15
US3011024A (en) * 1958-07-25 1961-11-28 Kastel Lillian Telephone set
NL257471A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1959-12-16 1900-01-01
DE1141681B (de) * 1961-04-07 1962-12-27 Huettenwerk Oberhausen Ag Fernsprechteilnehmerschaltung fuer Linien-Waehlanlagen mit Freisprecheinrichtung
US3530250A (en) * 1965-06-19 1970-09-22 Agfa Gevaert Ag Telephone monitoring of remotely located areas
SE339833B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1970-02-18 1971-10-25 K Blomberg
GB8334012D0 (en) * 1983-12-21 1984-02-01 Gen Electric Co Plc Telephone instruments

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB336946A (en) * 1928-10-10 1930-10-21 Siemens Ag Improvements in circuit arrangements for conference telephones
DE597131C (de) * 1930-09-05 1934-05-17 Siemens & Halske Akt Ges Schaltungsanordnung fuer Konferenzanlagen mit mehreren Haupt- und Nebenstellen
CH192713A (de) * 1936-11-05 1937-08-31 Autophon Ag Umschalteinrichtung zur wahlweisen Führung der Gespräche mit dem Mikrotelephon des Sprechstellen-Apparates oder mit einem Lautsprechertelephon.
US2300044A (en) * 1940-07-23 1942-10-27 American Telephone & Telegraph Telephone subscriber's station
NL64921C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1942-10-24
CH240686A (de) * 1942-11-16 1946-01-15 Ag Autophon Vermittlungseinrichtung in elektro-akustischer Übertragungsanlage.
DE887956C (de) * 1950-12-27 1953-08-27 Western Electric Co Schaltungsanordnung zur Regelung des UEbertragungspegels fuer Fernsprechteilnehmerstellen

Also Published As

Publication number Publication date
US2801287A (en) 1957-07-30
GB777184A (en) 1957-06-19
DE1032791B (de) 1958-06-26
BE539848A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JPS331003B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1958-02-18

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