FR1574037A - - Google Patents

Info

Publication number
FR1574037A
FR1574037A FR1574037DA FR1574037A FR 1574037 A FR1574037 A FR 1574037A FR 1574037D A FR1574037D A FR 1574037DA FR 1574037 A FR1574037 A FR 1574037A
Authority
FR
France
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)
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 FR1574037A publication Critical patent/FR1574037A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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
    • G08B29/06—Monitoring of the line circuits, e.g. signalling of line faults
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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
    • G08B29/06—Monitoring of the line circuits, e.g. signalling of line faults
    • G08B29/08—Signalling of tampering with the line circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR1574037D 1968-04-05 1968-04-05 Expired FR1574037A (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR147089 1968-04-05

Publications (1)

Publication Number Publication Date
FR1574037A true FR1574037A (da) 1969-07-11

Family

ID=8648616

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1574037D Expired FR1574037A (da) 1968-04-05 1968-04-05

Country Status (2)

Country Link
FR (1) FR1574037A (da)
NL (1) NL6905037A (da)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984001456A1 (fr) * 1982-10-06 1984-04-12 Jean Faget Dispositif d'alarme autocontrole et autoprotege

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1000713C2 (nl) * 1995-06-30 1996-12-31 Railbedrijven B V Zelfdetecterende kortsluitbrug voor een beveiligde spoorbaansectie.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984001456A1 (fr) * 1982-10-06 1984-04-12 Jean Faget Dispositif d'alarme autocontrole et autoprotege
FR2534396A1 (fr) * 1982-10-06 1984-04-13 Faget Jean Dispositif d'alarme autocontrole et autoprotege

Also Published As

Publication number Publication date
NL6905037A (da) 1969-10-07

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Legal Events

Date Code Title Description
ST Notification of lapse