| |
 |
|
Class Information
Number: 340/328
Name: Communications: electrical > Systems > Audible signals (e.g., bell rings softly first and then loudly)
Description: Subject matter having an audible signal.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7623024 |
Adjustable door chime with interchangeable parts |
Nov. 24, 2009 |
| 7619538 |
Programmable, directing evacuation systems: apparatus and method |
Nov. 17, 2009 |
| 7592910 |
Matching system |
Sep. 22, 2009 |
| 7570154 |
Wireless door chime having changeable high quality sounds and method therefor |
Aug. 4, 2009 |
| 7557728 |
Using audio to detect changes to the performance of an application |
Jul. 7, 2009 |
| 7498927 |
Security alarm |
Mar. 3, 2009 |
| 7486196 |
Using audio to detect changes to the performance of an application |
Feb. 3, 2009 |
| 7477134 |
Apparatuses and methods for driving a doorbell system peripheral load at a higher current |
Jan. 13, 2009 |
| 7388474 |
Vehicular obstacle detection system |
Jun. 17, 2008 |
| 7365637 |
Reversible diode doorbell detection circuit |
Apr. 29, 2008 |
| 7335885 |
Ultra low power NDIR gas sensor fire detector |
Feb. 26, 2008 |
| 7327219 |
Enhanced alarm system for monitoring of patients |
Feb. 5, 2008 |
| 7242292 |
Infrared communication system and method |
Jul. 10, 2007 |
| 7186979 |
Passive NDIR carbon dioxide sensor fire detector |
Mar. 6, 2007 |
| 7176460 |
Passive NDIR gas sensor fire detector |
Feb. 13, 2007 |
| 7173534 |
Bird control system |
Feb. 6, 2007 |
| 7126455 |
Method for controlling abusive use of doorbells |
Oct. 24, 2006 |
| 7053757 |
Intelligent door plate and chime |
May. 30, 2006 |
| 7049956 |
Method and apparatus for disabled access to polling places |
May. 23, 2006 |
| 7038586 |
Vehicle horn actuation mechanism and method |
May. 2, 2006 |
| 7034664 |
Alerting system using a communication protocol |
Apr. 25, 2006 |
| 6975213 |
Whistle with light emitting device |
Dec. 13, 2005 |
| 6879848 |
Method and apparatus for alerting an operator of an incoming cellular or portable phone call |
Apr. 12, 2005 |
| 6606030 |
Pet wireless doorbell device and trainer |
Aug. 12, 2003 |
| 6559767 |
Vibration-sensing alarm device |
May. 6, 2003 |
| 6545595 |
CD quality wireless door chime |
Apr. 8, 2003 |
| 6529121 |
Hand-worn warning device and method |
Mar. 4, 2003 |
| 6445302 |
Pet wireless doorbell device |
Sep. 3, 2002 |
| 6433692 |
Animal actuating signaling device |
Aug. 13, 2002 |
| 6417772 |
Life safety system with energy saving visual alarm appliance and method |
Jul. 9, 2002 |
| 6285277 |
Page simulating device |
Sep. 4, 2001 |
| 6285294 |
Automated door knocker |
Sep. 4, 2001 |
| 6265974 |
Systems and methods for monitoring spatial relationship between mobile objects |
Jul. 24, 2001 |
| 6252495 |
Selector device |
Jun. 26, 2001 |
| 6177863 |
Audio alarm signal initiation device |
Jan. 23, 2001 |
| 6175298 |
CD quality wireless door chime |
Jan. 16, 2001 |
| 6166635 |
Radio burglar alarm system for travel bag |
Dec. 26, 2000 |
| 6147593 |
Message output controller and system |
Nov. 14, 2000 |
| 6137410 |
Bag with sound emitting device |
Oct. 24, 2000 |
| 6130605 |
Vehicle security system with multi-sound pattern alarm and associated methods |
Oct. 10, 2000 |
| 6094139 |
Door bell for pets |
Jul. 25, 2000 |
| 6084959 |
Method and apparatus for controlling the ring volume of a telephone |
Jul. 4, 2000 |
| 6043732 |
Vacuum activated switch and container |
Mar. 28, 2000 |
| 6028504 |
Removable door chime |
Feb. 22, 2000 |
| 6020810 |
Automatic electronic date/mate finder and method of electronically finding a date/mate |
Feb. 1, 2000 |
| 5999089 |
Alarm system |
Dec. 7, 1999 |
| 5963131 |
Anti-theft device with alarm screening |
Oct. 5, 1999 |
| 5923242 |
Prize announcement assembly and its manufacture |
Jul. 13, 1999 |
| 5914650 |
Removable door chime |
Jun. 22, 1999 |
| 5900802 |
Removable door chime |
May. 4, 1999 |
|
|
|
