Legal status (The legal status 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 status listed.)
G04C13/00—Driving mechanisms for clocks by primary clocks
G04C13/02—Circuit arrangements; Electric clock installations
G04C13/021—Circuit arrangements; Electric clock installations primary-secondary systems using transmission of singular pulses for driving directly secondary clocks step by step
G04C13/025—Circuit arrangements; Electric clock installations primary-secondary systems using transmission of singular pulses for driving directly secondary clocks step by step via special lines