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PCE
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CPC Subclass Not Allocatable
G04F

TIME-INTERVAL MEASURING (measuring pulse characteristics G01R, e.g. G01R29/02; in radar or like systems G01S)

Description

G04F covers devices and methods for measuring time intervals and durations between events, including stopwatches, timers, and interval measurement instruments. This subclass encompasses mechanical, electronic, and digital mechanisms that measure, display, and control specific time periods for practical applications such as sports timing, industrial processes, and scientific experiments. Excluded are general timekeeping and clock mechanisms (G04B), clocks with specific functions (G04C-G04E), and time-of-day displays without interval measurement capability.

7 direct subcodes

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