G04C15/0063 - CPC Classification

Clocks driven by synchronous motors Synchronous clock systems, e.g. provided with radiolink or using transmission of alternating current via existing power distribution lines

• G04C15/0072 » {Setting the time-indicating means, e.g. by controlling the frequency or by changing the drive of the separate clocks by using an auxiliary motor} 0
• G04C15/0081 » {Automatic stabilisation of net frequency with regard to time, e.g. by comparing one of the clocks with an independent clock, means being provided for automatic compensation of disturbances} 0

Recent Application in this class: