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Caradeau & Cie Ets
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Caradeau & Cie Ets
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Application filed by Caradeau & Cie EtsfiledCriticalCaradeau & Cie Ets
Application grantedgrantedCritical
Publication of FR1105218ApublicationCriticalpatent/FR1105218A/fr
G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
G08B7/00—Signalling systems according to two or more of groups G08B3/00 - G08B6/00
G08B7/06—Signalling systems according to two or more of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
G—PHYSICS
G08—SIGNALLING
G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
G08B3/00—Audible signalling systems, e.g. audible personal calling systems
G08B3/10—Audible signalling systems, e.g. audible personal calling systems using electric transmission; using electromagnetic transmission
G08B3/1008—Personal calling arrangements or devices, i.e. paging systems
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Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Electromagnetism
(AREA)
FR1105218D1954-05-031954-05-03Perfectionnements apportés aux installations de signalisation électriques
ExpiredFR1105218A
(fr)