Apparatus for measuring unknown time intervals by electric means (timing devices for clocks or watches for comparing the rate of the oscillating member with a standard subclass 769; radar systems, analogous systems g01s 9/00; measuring frequency g01r 23/00; measuring phase angle g01r 25/00) [g04f 10/00] > Using pulses produced by radioisotopes [g04f 10/08] > Patents - Class: 968/848

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Class Information
Number: 968/848
Name: Horology > Apparatus for measuring unknown time intervals by electric means (timing devices for clocks or watches for comparing the rate of the oscillating member with a standard subclass 769; radar systems, analogous systems g01s 9/00; measuring frequency g01r 23/00; measuring phase angle g01r 25/00) [g04f 10/00] > Using pulses produced by radioisotopes [g04f 10/08]
Description:

Patents under this class:

Patent Number	Title Of Patent	Date Issued
4797864	Race stopwatch with plural displays and operating modes	Jan. 10, 1989
4783773	Regatta timing watch	Nov. 8, 1988

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