G04C21/16 - CPC Classification Index

ClassID:

179498 ⎘

G04C21/16 - CPC Classification

Classification description:

Producing acoustic time signals by electrical means producing the signals at adjustable fixed times

Sub-classes:

G04C21/18 » by mechanically unlocking an electro-mechanical vibrator, e.g. actuated by the leakage flux of the electric driving means 1
G04C21/20 » by closing a contact to ring an electro-mechanical alarm 0
G04C21/28 » by closing a contact to put into action electro-acoustic means, e.g. awakening by music 2
G04C21/30 » with provision for a number of operations at different times, e.g. ringing the bells in a school 1
G04C21/34 » Devices on watches or similar portable timepieces 3
G04C21/36 » Signal repeating devices 2
G04C21/38 » Adjusting the duration of signals 1

Recent Application in this class:

20200411155

2020-12-31

MEDICATION ASSURANCE SYSTEM AND METHOD

20200319601

2020-10-08

Alarm control apparatus and method using face recognition

20190164640

2019-05-30

Medication assurance system and method

20190137946

2019-05-09

Alarm control apparatus and method using face recognition

20170262615

2017-09-14

Medication assurance system and method

20170115638

2017-04-27

Adjustable snooze timer for mechanical watches

20160199261

2016-07-14

Medication administration tracker

20140339428

2014-11-20

Medication assurance system and method

20140043165

2014-02-13

Alarm control apparatus and method using face recognition

#10

20120327748

2012-12-27

SMART WAKING DEVICE AND SMART WAKING METHOD THEREOF

#11

20110096637

2011-04-28

Individual reminding device

#12

20100097227

2010-04-22

Alarm control apparatus and method using face recognition

#13

16056233

2019-12-17

Intelligent alarm sound control