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ELECTRO IONIQUE SA
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ELECTRO IONIQUE SA
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Application filed by ELECTRO IONIQUE SAfiledCriticalELECTRO IONIQUE SA
Application grantedgrantedCritical
Publication of FR773436ApublicationCriticalpatent/FR773436A/en
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
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Physics & Mathematics
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General Physics & Mathematics
(AREA)
FR773436D1934-05-181934-05-18
Device for transmitting signals from moving vehicles and to such vehicles
ExpiredFR773436A
(en)
Device for transmitting signals to a train for the transmission of different signals, comprising the use of circuits tuned to the same frequency or to different frequencies