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Class Information
Number:
968/833
Name:
Horology
>
Apparatus for measuring unknown time intervals by mechanical means [g04f 7/00]
> Using a mechanical oscillator [g04f 7/04]
Description:
Sub-classes under this class:
Class Number
Class Name
Patents
968/834
Running only during the time interval to be measured, e.g., stopwatch, etc. [g04f 7/06]
3
968/835
Watches or clocks with stop devices, e.g., chronograph, etc. [g04f 7/08]
5
Patents under this class:
Patent Number
Title Of Patent
Date Issued
4100728
Mechanical digital stopwatch
Jul. 18, 1978
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