FR13844E - Electric call system - Google Patents

Electric call system

Info

Publication number
FR13844E
FR13844E FR13844DA FR13844E FR 13844 E FR13844 E FR 13844E FR 13844D A FR13844D A FR 13844DA FR 13844 E FR13844 E FR 13844E
Authority
FR
France
Prior art keywords
call system
electric call
electric
call
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
Raoul Bigot
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.)
RAOUL BIGOT
Original Assignee
RAOUL BIGOT
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 RAOUL BIGOT filed Critical RAOUL BIGOT
Application granted granted Critical
Publication of FR13844E publication Critical patent/FR13844E/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B1/00—Systems for signalling characterised solely by the form of transmission of the signal
    • G08B1/08—Systems for signalling characterised solely by the form of transmission of the signal using electric transmission ; transformation of alarm signals to electrical signals from a different medium, e.g. transmission of an electric alarm signal upon detection of an audible alarm signal

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR13844D 1911-02-04 1911-02-18 Electric call system Expired FR13844E (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR425740T 1911-02-04
FR13844T 1911-02-18

Publications (1)

Publication Number Publication Date
FR13844E true FR13844E (en) 1911-07-13

Family

ID=1355848

Family Applications (1)

Application Number Title Priority Date Filing Date
FR13844D Expired FR13844E (en) 1911-02-04 1911-02-18 Electric call system

Country Status (1)

Country Link
FR (1) FR13844E (en)

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