FR1046536A - Return call sending device for telephone systems - Google Patents

Return call sending device for telephone systems

Info

Publication number
FR1046536A
FR1046536A FR1046536DA FR1046536A FR 1046536 A FR1046536 A FR 1046536A FR 1046536D A FR1046536D A FR 1046536DA FR 1046536 A FR1046536 A FR 1046536A
Authority
FR
France
Prior art keywords
sending device
telephone systems
return call
call sending
return
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
French (fr)
Inventor
Francois-Charles-Edm Berger
Anatole Girinsky
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.)
Thales SA
Original Assignee
CSF Compagnie Generale de Telegraphie sans Fil SA
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 CSF Compagnie Generale de Telegraphie sans Fil SA filed Critical CSF Compagnie Generale de Telegraphie sans Fil SA
Application granted granted Critical
Publication of FR1046536A publication Critical patent/FR1046536A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR1046536D 1951-12-19 1951-12-19 Return call sending device for telephone systems Expired FR1046536A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1046536T 1951-12-19

Publications (1)

Publication Number Publication Date
FR1046536A true FR1046536A (en) 1953-12-07

Family

ID=9592347

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1046536D Expired FR1046536A (en) 1951-12-19 1951-12-19 Return call sending device for telephone systems

Country Status (1)

Country Link
FR (1) FR1046536A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3064085A (en) * 1958-11-21 1962-11-13 Muramatsu Hiroye Absence sign device for telephone

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3064085A (en) * 1958-11-21 1962-11-13 Muramatsu Hiroye Absence sign device for telephone

Similar Documents

Publication Publication Date Title
FR1074921A (en) Coupling device for skis
FR1071312A (en) Waiting device for automatic telephone exchanges
FR1046536A (en) Return call sending device for telephone systems
FR1063396A (en) Device for preventing a third party from hearing a telephone conversation
FR1085009A (en) Connection device for flexible hoses
CH307142A (en) Device for automatic calling of telephone numbers.
FR1049411A (en) Elastic coupling device for transmission
FR1133971A (en) Automatic call device for telephone device
FR64076E (en) Coupling device for vehicles
FR1096496A (en) Selective receiver device for call signals for telecommunication systems
CH259613A (en) Automatic call device for telephone.
FR1069012A (en) Coupling device for tractors
FR1070185A (en) Coupling device for flexible pipes
FR1076687A (en) Telephone call signal transfer device
FR1019957A (en) Connection device for additional telephone systems
FR1105207A (en) Coupling arrangement for telephony systems with call seekers
FR1004830A (en) Intercommunication device for private telephone system
FR1054309A (en) Alarm device by phone call
FR1051618A (en) Safety device for cable connection systems
FR1081644A (en) Mounting device for transmitting call signals and selection signals
FR1098649A (en) Call transmission device for power line equipment
FR1090558A (en) Device for checking the preparation for reception of teleprinter subscriber stations
FR1418829A (en) Device for the formation of call numbers on automatic telephone devices
FR1043842A (en) Seat protection device
FR1065448A (en) Radar protection device