G04R40/04 - CPC Classification Index

ClassID:

179882 ⎘

G04R40/04 - CPC Classification

Classification description:

Correcting the clock frequency by detecting the radio signal frequency

Recent Application in this class:

20120049916

CALIBRATION METHOD FOR OSCILLATION FREQUENCY AND CALIBRATION DEVICE FOR OSCILLATION FREQUENCY

20090180358

Frequency corrector and clocking apparatus using the same

16233771

Electronic timepiece and control method of electronic timepiece