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Class Information
Number: 340/641
Name: Communications: electrical > Condition responsive indicating system > Specific condition > Condition of electrical apparatus > Signalling light element
Description: Subject matter wherein the monitored device is an electric signalling light.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7573393 |
Integrated fault output/fault response delay circuit |
Aug. 11, 2009 |
| 7545284 |
Signaling appliance, in particular a signaling column |
Jun. 9, 2009 |
| 7535371 |
Ground fault circuit interrupter with end-of-life protection |
May. 19, 2009 |
| 7532128 |
Position sensitive indicator detection |
May. 12, 2009 |
| 7495579 |
Traffic light status remote sensor system |
Feb. 24, 2009 |
| 7492275 |
Apparatus and method to visually indicate the status of a data storage device |
Feb. 17, 2009 |
| 7385481 |
Method and apparatus for tri-color rail signal system with control |
Jun. 10, 2008 |
| 7385519 |
Apparatus and method for operability and live-dead-live testing |
Jun. 10, 2008 |
| 7369056 |
Photoelectric controller for electric street lighting |
May. 6, 2008 |
| 7333021 |
Opening/closing apparatus for vehicle door |
Feb. 19, 2008 |
| 7319404 |
Non-invasive, low cost method and apparatus for the transmission, display and detection of internal computer status |
Jan. 15, 2008 |
| 7310049 |
Status indicator |
Dec. 18, 2007 |
| 7298244 |
NBC marker light |
Nov. 20, 2007 |
| 7295105 |
Turn indicator unit for a relay-controlled flasher |
Nov. 13, 2007 |
| 7286039 |
Chip resistor and method of manufacturing the same |
Oct. 23, 2007 |
| 7259685 |
Landing light fault annunciator |
Aug. 21, 2007 |
| 7245224 |
Methods and systems for diagnosing projection device failure |
Jul. 17, 2007 |
| 7196633 |
Integrated radio tower light controller and alarm reporting device |
Mar. 27, 2007 |
| 7158041 |
Electrical protection device and method for a communication circuit |
Jan. 2, 2007 |
| 7154378 |
Apparatus and method for using RFID to track use of a component within a device |
Dec. 26, 2006 |
| 7154403 |
Apparatus and method for monitoring the output of a warning or indicator light |
Dec. 26, 2006 |
| 7129856 |
Illuminated sign for traffic control and method for functional monitoring of such a sign |
Oct. 31, 2006 |
| 7123165 |
Apparatus and method for monitoring the output of a warning or indicator light |
Oct. 17, 2006 |
| 7116238 |
Electronic apparatus and fan module replacing method |
Oct. 3, 2006 |
| 7057529 |
LED traffic signal load switch |
Jun. 6, 2006 |
| 7046132 |
Lamp monitor and method for operating a lamp monitor |
May. 16, 2006 |
| 7002453 |
Remote lamp status display via fiber optic system |
Feb. 21, 2006 |
| 6989759 |
Lighting system |
Jan. 24, 2006 |
| 6982648 |
Lighting or indicating light unit for a vehicle and lighting or indicating system equipped with at least one such light unit |
Jan. 3, 2006 |
| 6972674 |
Lighting device for vehicle |
Dec. 6, 2005 |
| 6965307 |
Sign sentry |
Nov. 15, 2005 |
| 6956490 |
Projector with consumable component having memory device |
Oct. 18, 2005 |
| 6956377 |
Disconnection detection apparatus |
Oct. 18, 2005 |
| 6930613 |
Electrical instruments circuits |
Aug. 16, 2005 |
| 6897785 |
Charging station for pagers with night light |
May. 24, 2005 |
| 6867703 |
Safety-protection circuit |
Mar. 15, 2005 |
| 6828915 |
Circuit board fault warning system |
Dec. 7, 2004 |
| 6828739 |
Light emitting device |
Dec. 7, 2004 |
| 6826631 |
System and method for indicating the status of a communications link and traffic activity on non-protocol aware modules |
Nov. 30, 2004 |
| 6809652 |
Xenon light fixture with integral ballast and remote control |
Oct. 26, 2004 |
| 6791465 |
Tamper indicating bolt |
Sep. 14, 2004 |
| 6774785 |
Front panel light system for an electronic instrument which indicates the operating condition of the front panel lights and selected portions of the instrument |
Aug. 10, 2004 |
| 6690282 |
Light-source lamp unit, light-source device and projection-type display apparatus |
Feb. 10, 2004 |
| 6628203 |
Communication of device-related information after assembly |
Sep. 30, 2003 |
| 6584430 |
System and method for device monitoring |
Jun. 24, 2003 |
| 6570505 |
LED lamp with a fault-indicating impedance-changing circuit |
May. 27, 2003 |
| 6538448 |
Determining remaining operating life of fluorescent lamp |
Mar. 25, 2003 |
| 6535113 |
Electrical tell tale system for trailers |
Mar. 18, 2003 |
| 6515435 |
Pixel mirror based stage lighting system |
Feb. 4, 2003 |
| 6452501 |
Automatic shut-off and indication device for an electric heating appliance and electric pressing iron comprising such a device |
Sep. 17, 2002 |
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