Apparatus for measuring unknown time intervals by mechanical means [g04f 7/00] > Using a mechanical oscillator [g04f 7/04] > Running only during the time interval to be measured, e.g., stopwatch, etc. [g04f 7/06] > Patents

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Class Information
Number: 968/834
Name: Horology > Apparatus for measuring unknown time intervals by mechanical means [g04f 7/00] > Using a mechanical oscillator [g04f 7/04] > Running only during the time interval to be measured, e.g., stopwatch, etc. [g04f 7/06]
Description:

Patents under this class:

Patent Number	Title Of Patent	Date Issued
4396296	Stop watch	Aug. 2, 1983
4122663	Stop watch and timing device	Oct. 31, 1978
4106282	Escapement mechanism for watch	Aug. 15, 1978