CPC Definition - Subclass G04F
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| TIME-INTERVAL MEASURING (measuring pulse characteristics G01R, e.g. G01R 29/02; in radar or like systems G01S; masers H01S 1/00; generation of oscillations H03B; generation or counting of pulses, frequency dividing, analogue/digital conversion H03K {time fuzes F42C 9/00}) Definition statement This place covers:
References Limiting references This place does not cover:
Informative references Attention is drawn to the following places, which may be of interest for search:
Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals without driving mechanisms, e.g. egg timer (electric time and time-programme switches H01H 43/00) References Informative references Attention is drawn to the following places, which may be of interest for search:
Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeter with clockwork (electric time or time-programme switches H01H 43/00) References Informative references Attention is drawn to the following places, which may be of interest for search:
Apparatus for producing preselected time intervals for use as timing standards (generating clock signals for electric digital computers G06F 1/04; regulating frequency in general H03C, H03L) References Limiting references This place does not cover:
Informative references 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 G04D 7/12; radar systems, analogous systems G01S 7/00; measuring frequency G01R 23/00; measuring phase angle G01R 25/00)} References Limiting references This place does not cover:
Informative references Attention is drawn to the following places, which may be of interest for search:
Apparatus for measuring unknown time intervals by means not provided for in groups G04F 5/00 - G04F 10/00 References References out of a residual place Examples of places in relation to which this place is residual:
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