FR946177A - Perfectionnements aux postes téléphoniques d'intercommunication - Google Patents

Perfectionnements aux postes téléphoniques d'intercommunication

Info

Publication number
FR946177A
FR946177A FR946177DA FR946177A FR 946177 A FR946177 A FR 946177A FR 946177D A FR946177D A FR 946177DA FR 946177 A FR946177 A FR 946177A
Authority
FR
France
Prior art keywords
intercom stations
telephone intercom
telephone
stations
intercom
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)
Inventor
Horace-Robert-Henri Francastel
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 filed Critical
Application granted granted Critical
Publication of FR946177A publication Critical patent/FR946177A/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
    • H04M1/26—Devices for calling a subscriber
    • H04M1/52—Arrangements wherein a dial or the like is mechanically coupled to a line selector

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR946177D 1947-04-23 1947-04-23 Perfectionnements aux postes téléphoniques d'intercommunication Expired FR946177A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR946177T 1947-04-23

Publications (1)

Publication Number Publication Date
FR946177A true FR946177A (fr) 1949-05-25

Family

ID=9472753

Family Applications (1)

Application Number Title Priority Date Filing Date
FR946177D Expired FR946177A (fr) 1947-04-23 1947-04-23 Perfectionnements aux postes téléphoniques d'intercommunication

Country Status (1)

Country Link
FR (1) FR946177A (fr)

Similar Documents

Publication Publication Date Title
FR969787A (fr) Téléphonographe à transmetteur de réponse
FR970278A (fr) Perfectionnements aux postes téléphoniques d'abonnés
FR970914A (fr) Système téléphonique d'intercommunication
FR946177A (fr) Perfectionnements aux postes téléphoniques d'intercommunication
FR1005555A (fr) Perfectionnement aux liaisons téléphoniques
FR978646A (fr) Système téléphonique d'intercommunication
AU142850B2 (en) Improvements in loud-speaking telephone arrangements
AU1672047A (en) Improvements in loud-speaking telephone arrangements
FR935702A (fr) Système d'intercommunication téléphonique
CH280332A (de) Telephonstation.
AU141970B2 (en) Improvements in intercommunication telephone systems
AU1668347A (en) Improvements in intercommunication telephone systems
CH260208A (de) Wechselsprechanlage.
AU151323B2 (en) Improvements in loud-speaking telephone equipment
CA443984A (fr) Systeme pour repondre a des appels telephoniques
AU135198B2 (en) Improvements in telephone subscribers instruments
AU144642B2 (en) Concentration arrangements in manual telephone exchange systems
AU150491B2 (en) Improvements in telephone intercommunication amplifier equipment
FR1005255A (fr) Perfectionnement aux installations téléphoniques fonctionnant en combiné ou en haut-parleurs
AU139731B2 (en) Improvements in telephone systems
AU3821250A (en) Improvements in loud-speaking telephone equipment
FR54504E (fr) Poste téléphonique à intercommunication
AU1051247A (en) Improvements in telephone subscribers instruments
AU1622147A (en) Concentration arrangements in manual telephone exchange systems
AU3113249A (en) Improvements in telephone intercommunication amplifier equipment