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Publication of IT747270ApublicationCriticalpatent/IT747270A/it
G04C21/00—Producing acoustic time signals by electrical means
G04C21/16—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times
G04C21/36—Signal repeating devices
G—PHYSICS
G04—HOROLOGY
G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
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
