Over A Line (transmitting Time Signals Over Telephone Networks H04m 11/06; Time Setting Subclass 498) [g04c 11/04] Patents (Class 968/513)

Provided with arrangements to prevent synchronization by interfering signals [g04c 11/04b] (Class 968/514)

The timepiece preparing itself on set time on the reception of the synchronizing signal [g04c 11/04c] (Class 968/515)

There are no patents to show for this class.