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Class Information
Number: 968/837
Name: Horology > Apparatus for measuring unknown time intervals by electromechanical means [g04f 8/00]
Description:


Sub-classes under this class:

Class Number Class Name Patents
968/843 Means used apart from the timepiece for starting or stopping same [g04f 8/08] 18
968/839 Running only during the time intervals to be measured, e.g., stopwatch, etc. [g04f 8/00c] 10
968/840 Using an electromechanical oscillator (subclasses 817 and 844 take precedence) [g04f 8/02] 0
968/838 Using continuously running driving means [g04f 8/00b] 2


Patents under this class:

Patent Number Title Of Patent Date Issued
4748603 Chronograph watch May. 31, 1988
4681464 Timepiece movement including a plurality of stepping motors and an electronic time base Jul. 21, 1987
4666311 Electronic timepiece with analogue display May. 19, 1987
4657405 Stop watch capable of indicating a plurality of split times Apr. 14, 1987
4623260 Electronic timepiece with a chronograph system Nov. 18, 1986
4623261 Electronic timepiece with a chronograph system Nov. 18, 1986
4494879 Operating arrangement for an electro-mechanical chronometer Jan. 22, 1985
4364668 Timepiece with seconds display on demand Dec. 21, 1982
4362393 Chess clock Dec. 7, 1982
4212158 Electronic timepiece Jul. 15, 1980
4034601 Method and apparatus for determining coagulation times Jul. 12, 1977
3963349 Method and apparatus for determining coagulation times Jun. 15, 1976



 
 
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