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Filing date
Publication date
Application filedfiledCritical
Priority to JP1976150021UpriorityCriticalpatent/JPS5728152Y2/ja
Priority to US05/849,469prioritypatent/US4172358A/en
Priority to GB46584/77Aprioritypatent/GB1580625A/en
Publication of JPS5367461UpublicationCriticalpatent/JPS5367461U/ja
Application grantedgrantedCritical
Publication of JPS5728152Y2publicationCriticalpatent/JPS5728152Y2/ja
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
G04C21/20—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times by closing a contact to ring an electromechanical alarm
G—PHYSICS
G04—HOROLOGY
G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
G04C17/00—Indicating the time optically by electric means
G04C17/0025—Indicating the time optically by electric means by flaps
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Electromechanical Clocks
(AREA)
Measurement Of Predetermined Time Intervals
(AREA)