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Publication of CH138420ApublicationCriticalpatent/CH138420A/en
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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General Physics & Mathematics
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CH138420D1928-01-241929-01-23
Switching device mounted on a motor vehicle to operate an electrical lighting circuit of the vehicle.
CH138420A
(en)