BE813427A - Dispositif de signalisation electrique - Google Patents

Dispositif de signalisation electrique

Info

Publication number
BE813427A
BE813427A BE142951A BE142951A BE813427A BE 813427 A BE813427 A BE 813427A BE 142951 A BE142951 A BE 142951A BE 142951 A BE142951 A BE 142951A BE 813427 A BE813427 A BE 813427A
Authority
BE
Belgium
Prior art keywords
signaling device
electrical signaling
electrical
signaling
Prior art date
Application number
BE142951A
Other languages
English (en)
Inventor
D W Campbell
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
Publication of BE813427A publication Critical patent/BE813427A/fr

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B26/00—Alarm systems in which substations are interrogated in succession by a central station
    • G08B26/001—Alarm systems in which substations are interrogated in succession by a central station with individual interrogation of substations connected in parallel
    • G08B26/002—Alarm systems in which substations are interrogated in succession by a central station with individual interrogation of substations connected in parallel only replying the state of the sensor

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Selective Calling Equipment (AREA)
  • Alarm Systems (AREA)
BE142951A 1973-04-16 1974-04-08 Dispositif de signalisation electrique BE813427A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00351660A US3821479A (en) 1973-04-16 1973-04-16 Noninterfering electrical signaling

Publications (1)

Publication Number Publication Date
BE813427A true BE813427A (fr) 1974-10-08

Family

ID=23381802

Family Applications (1)

Application Number Title Priority Date Filing Date
BE142951A BE813427A (fr) 1973-04-16 1974-04-08 Dispositif de signalisation electrique

Country Status (5)

Country Link
US (1) US3821479A (fr)
BE (1) BE813427A (fr)
CA (1) CA1010524A (fr)
FR (1) FR2225798B1 (fr)
GB (1) GB1462096A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1491707A (en) * 1974-06-21 1977-11-16 Marconi Co Ltd Processor equipments
US4420831A (en) * 1980-09-26 1983-12-13 Minnesota Mining & Manufacturing Co. Method and device for frequency translation

Also Published As

Publication number Publication date
FR2225798A1 (fr) 1974-11-08
US3821479A (en) 1974-06-28
GB1462096A (en) 1977-01-19
CA1010524A (en) 1977-05-17
FR2225798B1 (fr) 1977-10-07

Similar Documents

Publication Publication Date Title
BE820239A (fr) Dispositif de connexion electrique
FR2335011A1 (fr) Dispositif de signalisation
SE397024B (sv) Elektrisk kontaktanordning
BR7501336A (pt) Dispositivo seletivo de ligacao eletrica
NL174784C (nl) Electrische verbindingsinrichting.
BE793158A (fr) Dispositif de protection de circuit electrique
FR2303393A1 (fr) Dispositif de raccordement electrique surminiaturise
BE822480A (fr) Dispositif de connexion electrique
BE826358A (fr) Dispositif de contact electrique
SE398025B (sv) Elektrisk kontaktanordning
BE819983A (fr) Circuit de verification de lampes de signalisation
BE820193A (fr) Dispositif indicateur de tensions electriques
IT1006583B (it) Dispositivo elettrico di segnalazio ne
BE814679A (fr) Dispositif commutateur comportant des contacts
SE397904B (sv) Elektrisk kontaktanordning
BE770557A (fr) Dispositif de raccordement electrique
BE813381A (fr) Dispositif de raccordement electrique
BE813427A (fr) Dispositif de signalisation electrique
BE812652A (fr) Dispositif electrique de signalisation
BE814677A (fr) Dispositif commutateur comportant des contacts
BE745868A (fr) Dispositif d'interruption electrique
BE767755A (fr) Dispositif de connexion electrique
FR2290018A1 (fr) Dispositif de contact electrique
BE813627A (fr) Dispositif de guirlande electrique
BE821616A (fr) Dispositif lumineux de signalisation

Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: AMERICAN DISTRICT TELEGRAPH CY

Effective date: 19860430