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G04C11/00—Synchronisation of independently-driven clocks
G04C11/08—Synchronisation of independently-driven clocks using an electro-magnet or-motor for oscillation correction
G04C11/081—Synchronisation of independently-driven clocks using an electro-magnet or-motor for oscillation correction using an electro-magnet
G04C11/084—Synchronisation of independently-driven clocks using an electro-magnet or-motor for oscillation correction using an electro-magnet acting on the balance
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FR796082D1934-12-291934-12-29Système de synchronisation pour horloges
ExpiredFR796082A
(fr)