Using A Mechanical Oscillator [g04f 7/04] Patents (Class 968/833)

Cross-Reference Art Collections

Running only during the time interval to be measured, e.g., stopwatch, etc. [g04f 7/06] (Class 968/834)
Watches or clocks with stop devices, e.g., chronograph, etc. [g04f 7/08] (Class 968/835)

There are no patents to show for this class.