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] > By measuring electric or magnetic quantities changing in proportion to time [g04f 10/10] > With conversion of the time intervals [g04f 10/10b] > Patents - Class: 968/850

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Class Information
Number: 968/850
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] > By measuring electric or magnetic quantities changing in proportion to time [g04f 10/10] > With conversion of the time intervals [g04f 10/10b]
Description:

Patents under this class:

Patent Number	Title Of Patent	Date Issued
4772843	Time measuring apparatus	Sep. 20, 1988
4769798	Successive period-to-voltage converting apparatus	Sep. 6, 1988
4764694	Interpolating time-measurement apparatus	Aug. 16, 1988
4613950	Self-calibrating time interval meter	Sep. 23, 1986
4408895	Apparatus for accurately timing an event relative to clock signals	Oct. 11, 1983
4301360	Time interval meter	Nov. 17, 1981
3983481	Digital intervalometer	Sep. 28, 1976
3970828	System for precision time measurement	Jul. 20, 1976

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