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HENRY MARTINY
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HENRY MARTINY
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Application filed by HENRY MARTINYfiledCriticalHENRY MARTINY
Application grantedgrantedCritical
Publication of FR527451ApublicationCriticalpatent/FR527451A/fr
G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
G08B9/00—Order telegraph apparatus, i.e. means for transmitting one of a finite number of different orders at the discretion of the user, e.g. bridge to engine room orders in ships
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR527451D1919-12-291919-12-29Dispositif électrique pour transmission de signaux
ExpiredFR527451A
(fr)