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LAVENS EDWARD-JOSEPH
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LAVENS EDWARD-JOSEPH
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Publication date
Application filed by LAVENS EDWARD-JOSEPHfiledCriticalLAVENS EDWARD-JOSEPH
Application grantedgrantedCritical
Publication of FR321300ApublicationCriticalpatent/FR321300A/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)
FR321300D1902-03-181902-03-18Télégraphe à signaux
ExpiredFR321300A
(fr)