G04C19/00 - CPC Classification Index

ClassID:

179487 ⎘

G04C19/00 - CPC Classification

Classification description:

Producing optical time signals at prefixed times by electric means

Sub-classes:

Clock Device with Automatic Simulation of Sunrise or Suset

Continuous time adjustment daylight saving time method and apparatus

Clock device with automatic simulation of sunrise or sunset

Clock device with automatic simulation of sunrise or sunset

Clock device with automatic simulation of sunrise or sunset

Clock device with automatic simulation of sunrise or sunset