Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jakob MattyfiledCriticalJakob Matty
Publication of CH82691ApublicationCriticalpatent/CH82691A/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
G04C21/26—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 vibrations caused by the operation of a mechanical alarm work
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
CH82691A1919-04-291919-04-29Vorrichtung an Weckeruhren zum selbsttätigen Einschalten von elektrischen Lampen
CH82691A
(de)
Schaltungsanordnung zur Fernhaltung der in Primärkreisen von Transformationsgeräten auftretenden schnellen elektrischen Schwingungen von der Stromquelle