G04C21/12 - CPC Classification Index

ClassID:

179496 ⎘

G04C21/12 - CPC Classification

Classification description:

Producing acoustic time signals by electrical means; Indicating the time of the day by electro-acoustic means

Sub-classes:

G04C21/14 » Electro-acoustic time announcement, i.e. spoken 3

Recent Application in this class:

20230213892

Clock Device with Automatic Simulation of Sunrise or Suset

20210018877

Clock device with automatic simulation of sunrise or sunset

20190101868

Clock device with automatic simulation of sunrise or sunset

20170277133

Clock device with automatic simulation of sunrise or sunset

20160363910

Clock device with automatic simulation of sunrise or sunset

20160041527

Clock device with automatic simulation of sunrise or sunset

20140269222

Clock device with automatic simulation of sunrise or sunset

20120307603

Time reporting through vibration

14471415

Chronograph assembly