FR470986A - Device for monitoring electric lamps - Google Patents

Device for monitoring electric lamps

Info

Publication number
FR470986A
FR470986A FR470986DA FR470986A FR 470986 A FR470986 A FR 470986A FR 470986D A FR470986D A FR 470986DA FR 470986 A FR470986 A FR 470986A
Authority
FR
France
Prior art keywords
electric lamps
monitoring electric
monitoring
lamps
electric
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.)
VERTRIEBSGESELLSCHAFT MAGNET E
Original Assignee
VERTRIEBSGESELLSCHAFT MAGNET E
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 VERTRIEBSGESELLSCHAFT MAGNET E filed Critical VERTRIEBSGESELLSCHAFT MAGNET E
Application granted granted Critical
Publication of FR470986A publication Critical patent/FR470986A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/02—Monitoring continuously signalling or alarm systems
    • G08B29/10—Monitoring of the annunciator circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR470986D 1913-04-17 1914-04-15 Device for monitoring electric lamps Expired FR470986A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE470986X 1913-04-17

Publications (1)

Publication Number Publication Date
FR470986A true FR470986A (en) 1914-10-08

Family

ID=1509290

Family Applications (1)

Application Number Title Priority Date Filing Date
FR470986D Expired FR470986A (en) 1913-04-17 1914-04-15 Device for monitoring electric lamps

Country Status (1)

Country Link
FR (1) FR470986A (en)

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