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G04C23/00—Clocks with attached or built-in means operating any device at preselected times or after preselected time-intervals
G04C23/14—Mechanisms continuously running to relate the operation(s) to the time of day
G04C23/16—Mechanisms continuously running to relate the operation(s) to the time of day acting only at one preselected time or during one adjustable time interval
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FR418065D1910-07-081910-07-08Appareil automatique d'allumage et d'extinction de lampes électriques
ExpiredFR418065A
(fr)