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Application filed by Otto SchultzfiledCriticalOtto Schultz
Publication of CH62626ApublicationCriticalpatent/CH62626A/de
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
G04C21/22—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times by closing a contact to ring an electromechanical alarm put into action by the arbor of a mechanical alarm work
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Physics & Mathematics
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General Physics & Mathematics
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CH62626A1912-11-151912-11-15Wecker mit elektrischer Beleuchtungsvorrichtung
CH62626A
(de)