CPC Definition - Subclass G04F
This place covers:
- apparatus for measuring-off predetermined time intervals;
- apparatus for producing such intervals as timing standards, e.g. metronomes;
- apparatus for measuring unknown intervals, e.g. precision systems for short-time-interval measurement.
This place does not cover:
time fuzes |
Attention is drawn to the following places, which may be of interest for search:
electric time and time-programme switches |
Attention is drawn to the following places, which may be of interest for search:
electric time and time-programme switches |
This place does not cover:
generating clock signals for electric digital computers |
This place does not cover:
timing devices for clocks or watches for comparing the rate of the oscillating member with a standard |
Attention is drawn to the following places, which may be of interest for search:
measuring frequency | |
measuring phase angle | |
radar systems, analogous systems |
Examples of places in relation to which this place is residual:
Apparatus for producing preselected time intervals for use as timing standards | |
Apparatus for measuring unknown time intervals by mechanical means | |
Apparatus for measuring unknown time intervals by electromechanical means | |
Apparatus for measuring unknown time intervals by electric means |