FR454319A - Automatic call device for multiple phone calls - Google Patents

Automatic call device for multiple phone calls

Info

Publication number
FR454319A
FR454319A FR454319DA FR454319A FR 454319 A FR454319 A FR 454319A FR 454319D A FR454319D A FR 454319DA FR 454319 A FR454319 A FR 454319A
Authority
FR
France
Prior art keywords
phone calls
call device
automatic call
multiple phone
automatic
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)
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston 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 Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR454319A publication Critical patent/FR454319A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR454319D 1912-04-24 1912-04-24 Automatic call device for multiple phone calls Expired FR454319A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR454319T 1912-04-24

Publications (1)

Publication Number Publication Date
FR454319A true FR454319A (en) 1913-07-01

Family

ID=1494334

Family Applications (1)

Application Number Title Priority Date Filing Date
FR454319D Expired FR454319A (en) 1912-04-24 1912-04-24 Automatic call device for multiple phone calls

Country Status (1)

Country Link
FR (1) FR454319A (en)

Similar Documents

Publication Publication Date Title
FR454319A (en) Automatic call device for multiple phone calls
FR476040A (en) New call device for automatic telephony
FR1063396A (en) Device for preventing a third party from hearing a telephone conversation
FR436734A (en) Call device for telephone systems
FR487186A (en) Improvements to call indicators for automatic telephone systems
FR16264E (en) Automatic counting device for telephone calls
FR448267A (en) Coupling device for talking machines
FR460329A (en) Release device for pumps
FR424824A (en) Selector call device
FR448293A (en) Compensating device for telephone circuits
FR445590A (en) Subscriber station for automatic telephone systems
FR452816A (en) Prepaid automatic telephone
FR450475A (en) Waiting annunciator device for telephone systems
FR487707A (en) Improvements to call devices for automatic telephone systems
ES53095A1 (en) A new device called "Telephone".
FR426179A (en) Coupling device for telephone exchanges
FR466920A (en) Automatic telephone intercom system
FR454849A (en) Immersion device for nitrification turbines
FR458679A (en) Automatic stop mechanism for talking machines
FR16446E (en) Device allowing automatic establishment of telephone communications
FR438092A (en) Device allowing automatic establishment of telephone communications
FR455731A (en) Automatic prepayment device for telephone communications
CH67181A (en) Selecteutr device for telephone systems
FR500766A (en) Call dialer for automatic telephony
FR411481A (en) Automatic shutdown device for all talking machines