| Patents for G04C 21 - Producing acoustic time signals by electrical means (1,026) |
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| 05/05/2011 | US20110103193 Personal Alert System with Adhesive Fixation |
| 04/28/2011 | US20110096637 Individual reminding device |
| 04/27/2011 | CN201812156U Oversleeping prevention alarm clock device with function of language learning |
| 04/27/2011 | CN201812150U Mobile alarm clock |
| 04/14/2011 | US20110085423 Alarm Clock with Bedpost Pressure Sensor |
| 04/07/2011 | US20110080812 Full choice wake system |
| 04/06/2011 | EP1584001B1 Portable tight device with an electro-acoustic transducer |
| 03/31/2011 | DE4243346A1 Method for determining path of vessel, involves measuring magnetic field in phase at constant points of time lying at distance from vessel, if it travels though measuring base |
| 03/23/2011 | CN201773283U Schedule reminding alarm clock capable of recording |
| 03/16/2011 | CN201765451U Dice-shaped alarm clock |
| 03/16/2011 | CN201765443U Alarm clock |
| 03/10/2011 | US20110058456 Apparatus for waking up a user |
| 02/24/2011 | DE102009038465A1 Waking and signaling device for waking sleeping person, has remote controlled house bell pushbutton or hour hand for releasing signal of cuckoo at desired waking time, where device is formed as cuckoo clock |
| 02/16/2011 | CN201749313U Intelligent alarm clock |
| 02/16/2011 | CN101976033A Alarm clock with drum |
| 02/09/2011 | CN101393420B Audio/video alarm clock and pre-set time reminding method thereof |
| 01/26/2011 | CN101957596A Acoustic control alarm clock |
| 01/19/2011 | CN201716546U Alarm clock with changeable ring |
| 01/05/2011 | CN201698179U Precise clock synchronous bell ringer |
| 01/05/2011 | CN201698178U Volume-adjustable alarm clock |
| 01/05/2011 | CN201698177U Wrist watch |
| 12/29/2010 | CN201689289U Multifunctional sound recording alarm clock |
| 12/29/2010 | CN101930210A Alarm clock |
| 12/15/2010 | CN201673380U Voice-controlled alarm clock |
| 12/08/2010 | CN201667007U Darkroom digital display timer |
| 11/25/2010 | WO2010104296A3 Alarm clock which operates in conjunction with a gradually fading-in lamp |
| 11/24/2010 | CN201654494U Timing device |
| 11/11/2010 | US20100284251 Infant feeding management system |
| 11/10/2010 | CN201628851U Alarm clock with changeable sounds |
| 11/03/2010 | CN201622448U Novel alarm clock |
| 10/26/2010 | US7821874 Systems, methods and computer products for multiple reminder and sub-events for calendar items |
| 10/21/2010 | US20100265803 Aid apparatus for enhancing sleeping and awakening |
| 10/19/2010 | US7817500 Shock-activated switch device |
| 10/13/2010 | CN201607624U 光信号感应闹钟 Optical signal sensing alarm clock |
| 09/16/2010 | WO2010104296A2 Alarm clock which operates in conjunction with a gradually fading-in lamp |
| 09/16/2010 | US20100232261 Sunrise alarm clock |
| 09/15/2010 | CN201583808U Full-automatic cartoon alarm clock |
| 09/15/2010 | CN201583801U Alarm clock with handle |
| 09/09/2010 | US20100226212 Video clock radio which plays themed audio and video |
| 08/18/2010 | CN101807041A Sound-controlled speaking clock |
| 08/11/2010 | CN201548823U Electronic bell striking device |
| 08/11/2010 | CN201548817U Intelligent alarm clock |
| 08/05/2010 | US20100195447 Alarm clock and a system and a method to wake a user |
| 07/07/2010 | CN101770205A Memory aid |
| 06/29/2010 | US7746729 Electronic device with working mode switching function and method of switching working mode |
| 06/23/2010 | CN201514556U Alarm clock with small hands ringing together |
| 06/03/2010 | US20100135126 Timepiece movement fitted with a vibrating alarm |
| 05/19/2010 | CN201477383U Pregnant woman assistant tool |
| 05/12/2010 | CN201464829U Novel magnetically-driven dynamic and three-dimensional graphic display clock |
| 05/11/2010 | US7715282 Single day alarm clock |
| 05/11/2010 | US7715278 Initiating playing of data using an alarm clock |
| 05/05/2010 | CN201449526U Electric wave clock circuit control device |
| 05/05/2010 | CN201449525U Positioning contact switch used for electronic clock |
| 05/04/2010 | US7710831 Single day alarm clock |
| 04/21/2010 | CN201440204U Multi-functional alarm clock |
| 04/08/2010 | US20100085840 Electronic device and method providing improved bedtime mode of operation |
| 03/31/2010 | CN201434972Y Novel alarm clock |
| 03/24/2010 | CN201429777Y Medicine taking prompting watch |
| 03/11/2010 | US20100061196 Alarm device |
| 02/10/2010 | CN201402387Y Recording alarm clock |
| 01/07/2010 | US20100002546 Timepiece including a striking mechanism |
| 01/06/2010 | CN201378262Y Novel alarm clock movement |
| 12/30/2009 | CN201373988Y Electronic clock with memory function |
| 12/29/2009 | US7639570 Electronic device with an alarm clock function and method of controlling the function |
| 12/09/2009 | CN201359684Y Dosing prompt clock |
| 12/01/2009 | US7626892 Timing device with power winder |
| 11/25/2009 | CN201352305Y Exclusive electronic alarm clock |
| 11/12/2009 | US20090279392 Electronic device and method providing improved indication that an alarm clock is in an on condition |
| 11/04/2009 | CN201340522Y Table lamp alarm |
| 10/22/2009 | US20090262607 Information communication terminal with acceleration sensor |
| 09/30/2009 | CN201319122Y Light-controlled alarm clock |
| 09/17/2009 | US20090231964 Variable alarm sounds |
| 08/13/2009 | DE202009007098U1 Wecker mit Druckschalter Alarm Clock with pressure switch |
| 08/12/2009 | CN201289592Y Sound recording alarm clock |
| 08/05/2009 | CN101501583A Information communication terminal with acceleration sensor |
| 07/30/2009 | US20090190446 Alarm Clock |
| 07/22/2009 | CN201278094Y Sound recording clock |
| 07/09/2009 | US20090175134 Alarm and managing method thereof |
| 07/09/2009 | US20090175132 Initiating playing of data using an alarm clock |
| 07/07/2009 | US7558158 Electronic apparatus and method for implementing an intelligent wake mode |
| 06/11/2009 | US20090147628 Mobile terminal and method of setting alarm therein |
| 06/04/2009 | US20090141594 Alarm process and device |
| 05/27/2009 | CN201247393Y 移动式闹钟装置 Mobile alarm device |
| 05/19/2009 | US7536020 Wearable communication device |
| 04/15/2009 | EP2048552A1 Information communication terminal with acceleration sensor |
| 04/15/2009 | CN201222177Y Novel alarm clock |
| 04/15/2009 | CN101408751A Alarm clock capable of adjusting alarming time |
| 04/14/2009 | US7518955 Electronic device and method for enhancing usability of electronic device |
| 04/09/2009 | WO2005084388A3 Personal safety device |
| 03/25/2009 | CN101393420A Audio/video alarm clock and pre-set time reminding method thereof |
| 03/19/2009 | US20090073813 Alarm clock with multiple interactive audio notifications |
| 03/19/2009 | US20090073812 Audio/video alarm clock and pre-set time reminding method thereof |
| 03/10/2009 | US7502281 Timer having a variable mode display |
| 03/04/2009 | CN201203765Y 智能型闹钟 Smart Alarm Clock |
| 02/12/2009 | US20090040877 Portable timepiece and alarm linked to scheduled events |
| 01/14/2009 | CN100451875C Event design chronometer |
| 01/08/2009 | US20090010108 Electronic device with an alarm clock function and method of controlling the function |
| 01/02/2009 | DE202008009611U1 Armbanduhr mit Weckfunktion Watch with alarm function |
| 12/24/2008 | DE202008010701U1 Uhr mit Anzeige von Geldeinheiten Clock with display of monetary units |
| 12/24/2008 | CN201170845Y Alarm clock device controlled by cipher |