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G04C21/02
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Parent Industries
G
PHYSICS
G04
Horology
G04C
ELECTROMECHANICAL CLOCKS OR WATCHES
G04C21/00
Producing acoustic time signals by electrical means
Current Industry
G04C21/02
Constructional details
Industries
Overview
Organizations
People
Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Acoustic device
Patent number
10,310,567
Issue date
Jun 4, 2019
Casio Computer Co., Ltd.
Kazunori Kita
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Electronic apparatus and shock detection method
Patent number
9,546,919
Issue date
Jan 17, 2017
Seiko Instruments Inc.
Tetsuya Nobe
G01 - MEASURING TESTING
Information
Patent Grant
Musical or striking watch provided with an acoustic radiation arran...
Patent number
9,360,843
Issue date
Jun 7, 2016
Montres Breguet SA
Younes Kadmiri
G04 - HOROLOGY
Information
Patent Grant
Controlling table music system
Patent number
9,280,141
Issue date
Mar 8, 2016
Bose Corporation
Robert Preston Parker
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Electronic timepiece
Patent number
5,940,348
Issue date
Aug 17, 1999
Citizen Watch Co., Ltd.
Tomomi Murakami
G04 - HOROLOGY
Information
Patent Grant
Waterproof acoustic alarm safety device embodied in a wristwatch
Patent number
5,726,626
Issue date
Mar 10, 1998
SMH Management Services AG
Saji Jabbour
G08 - SIGNALLING
Information
Patent Grant
Alarm clock with a switch button asembly
Patent number
5,253,230
Issue date
Oct 12, 1993
Davis Kuo
G04 - HOROLOGY
Information
Patent Grant
Switch assembly of an alarm clock with a snooze feature mounted the...
Patent number
5,229,982
Issue date
Jul 20, 1993
Davis Kuo
G04 - HOROLOGY
Information
Patent Grant
Alarm clock with an improved switch button assembly
Patent number
5,177,716
Issue date
Jan 5, 1993
Davis Kuo
G04 - HOROLOGY
Information
Patent Grant
Alarm clock
Patent number
5,095,468
Issue date
Mar 10, 1992
Tomy Company, Ltd.
Seiichi Sato
A63 - SPORTS GAMES AMUSEMENTS
Information
Patent Grant
Alarm clock
Patent number
5,050,140
Issue date
Sep 17, 1991
ETA S.A. Fabriques d'Ebauches
Christophe Aubert
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Electric apparatus with silent alarm
Patent number
5,023,853
Issue date
Jun 11, 1991
Masayuki Kawata
G04 - HOROLOGY
Information
Patent Grant
Alarm timepiece
Patent number
4,918,674
Issue date
Apr 17, 1990
Seikosha Co., Ltd.
Shigeru Shimozono
G04 - HOROLOGY
Information
Patent Grant
Alarm clock
Patent number
4,754,444
Issue date
Jun 28, 1988
Rhythm Watch Co., Ltd.
Sadao Shimizu
G04 - HOROLOGY
Information
Patent Grant
Alarm clock
Patent number
4,730,284
Issue date
Mar 8, 1988
Michael E. Adams
G04 - HOROLOGY
Information
Patent Grant
Alarm on-off mechanism for alarm watch
Patent number
4,727,526
Issue date
Feb 23, 1988
Seikosha Co., Ltd.
Yukio Tajima
G04 - HOROLOGY
Information
Patent Grant
Novelty alarm clock
Patent number
4,505,597
Issue date
Mar 19, 1985
Jack L. Flinn
G04 - HOROLOGY
Information
Patent Grant
Electronic alarm wrist watch
Patent number
4,456,387
Issue date
Jun 26, 1984
Kazunobu Igarashi
G04 - HOROLOGY
Information
Patent Grant
Small type acoustic device
Patent number
4,445,113
Issue date
Apr 24, 1984
Seiko Instruments & Electronics Ltd.
Shigeo Mori
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information
Patent Grant
Sound emitting device for electronic timepiece
Patent number
4,374,624
Issue date
Feb 22, 1983
Citizen Watch Co., Ltd.
Toshio Murata
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information
Patent Grant
Time detecting device for alarm clock
Patent number
4,371,267
Issue date
Feb 1, 1983
Seiko Koki Kabushiki Kaisha
Masuo Ogihara
G04 - HOROLOGY
Information
Patent Grant
Alarm deactivation system employing timed manual switch operation
Patent number
4,352,170
Issue date
Sep 28, 1982
Milton W. Jetter
G04 - HOROLOGY
Information
Patent Grant
Sound producing device for watches
Patent number
4,330,878
Issue date
May 18, 1982
Citizen Watch Co., Ltd.
Seiichi Nakamura
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Structure for coupling back cover with case band in wrist watch
Patent number
4,298,973
Issue date
Nov 3, 1981
Citizen Watch Co., Ltd.
Motoyuki Saito
G04 - HOROLOGY
Information
Patent Grant
Watch
Patent number
4,271,498
Issue date
Jun 2, 1981
Ebauches S.A.
Roberto Zafferri
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information
Patent Grant
Alarm setting indication device for digital clock
Patent number
4,270,195
Issue date
May 26, 1981
Seiko Koki Kabushiki Kasiha
Masuo Ogihara
G04 - HOROLOGY
Information
Patent Grant
Electro-acoustic device for alarm watch
Patent number
4,258,432
Issue date
Mar 24, 1981
Ebauches S.A.
Roberto Zafferri
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information
Patent Grant
Alarm
Patent number
4,218,875
Issue date
Aug 26, 1980
Michael L. Rothman
G04 - HOROLOGY
Information
Patent Grant
Wristwatch with sound-making device
Patent number
4,180,970
Issue date
Jan 1, 1980
Kabushiki Kaisha Suwa Seikosha
Ikuo Tokunaga
G04 - HOROLOGY
Information
Patent Grant
Watch with electronic buzzer
Patent number
4,167,849
Issue date
Sep 18, 1979
Kabushiki Kaisha Daini Seikosha
Keikichi Takahashi
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Patents Applications
last 30 patents
Information
Patent Application
Acoustic Device
Publication number
20180081406
Publication date
Mar 22, 2018
Casio Computer Co., Ltd.
Kazunori KITA
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
ELECTRONIC APPARATUS AND SHOCK DETECTION METHOD
Publication number
20140290385
Publication date
Oct 2, 2014
Seiko Instruments Inc.
Tetsuya NOBE
G01 - MEASURING TESTING
Information
Patent Application
PILLBOX AND ALARM CLOCK
Publication number
20140064038
Publication date
Mar 6, 2014
William Wesley Duer
G04 - HOROLOGY
Information
Patent Application
CONTROLLING TABLE MUSIC SYSTEM
Publication number
20130273869
Publication date
Oct 17, 2013
Bose Corporation
Robert Preston Parker
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
TIMEPIECE WITH INTERCHANGEABLE DISPLAY AND SOUNDS
Publication number
20120287763
Publication date
Nov 15, 2012
Mag-Nif Incorporated
William Knox, JR.
G04 - HOROLOGY
Information
Patent Application
Alarm Clock with Bedpost Pressure Sensor
Publication number
20110085423
Publication date
Apr 14, 2011
Brian Cottrell
G04 - HOROLOGY
Information
Patent Application
Clock with pressure sensitive signal source
Publication number
20030133363
Publication date
Jul 17, 2003
David Kwok
G04 - HOROLOGY