Apparatus for measuring unknown time intervals by mechanical means [g04f 7/00] > Patents

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Class Information
Number: 968/831
Name: Horology > Apparatus for measuring unknown time intervals by mechanical means [g04f 7/00]
Description:

Sub-classes under this class:

Class Number	Class Name	Patents
968/832	By measuring the distance of fall or the final velocity of a falling body [g04f 7/02]	0
968/836	Means used apart from the timepiece for starting or stopping same [g04f 7/10]	1
968/833	Using a mechanical oscillator [g04f 7/04]	1

Patents under this class:

Patent Number	Title Of Patent	Date Issued
4137049	Device for use as an elapsed time indicator or time temperature indicator	Jan. 30, 1979
4109455	Spiral orifice dashpot timer	Aug. 29, 1978
4021046	Accumulative comparative timing device	May. 3, 1977
4012900	Setting means for estimated time of arrival clock hands	Mar. 22, 1977