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Schaeffer & Budenberg A R L
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Schaeffer & Budenberg A R L
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Application filed by Schaeffer & Budenberg A R LfiledCriticalSchaeffer & Budenberg A R L
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Publication of FR782284ApublicationCriticalpatent/FR782284A/en
G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
G08B5/36—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources
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Physics & Mathematics
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Electromagnetism
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General Physics & Mathematics
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FR782284D1934-12-041934-12-04
Installation for the remote electrical transmission of the indications of the measuring instruments
ExpiredFR782284A
(en)