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Class Information
Number: 324/403
Name: Electricity: measuring and testing > Electric lamp or discharge device
Description: Subject matter comprising systems, apparatus, and methods for testing the operativeness or characteristics of electric lamps or electric discharge devices.

Sub-classes under this class:

Class Number Class Name Patents
324/404 Cathode-ray tube 56
324/414 Electric lamp 124
324/405 Vacuum tube 8

Patents under this class:

Patent Number Title Of Patent Date Issued
8618794 Detecting inductive objects using inputs of integrated circuit device Dec. 31, 2013
8614591 Mother substrate of organic light emitting displays capable of sheet unit testing and method of sheet unit testing Dec. 24, 2013
8564297 Stun device testing apparatus and methods Oct. 22, 2013
8520076 Liquid crystal display and method of testing the same Aug. 27, 2013
8451005 Device and method for detecting a street lamp fault May. 28, 2013
8441470 Color sensor unit for use in display device, color measuring device for use in display device, display system incorporated with color sensor unit, and display calibration method May. 14, 2013
8324902 Stun device testing apparatus and methods Dec. 4, 2012
8072223 Monitoring circuit for determining if an electric element has failed before the electric element is powered Dec. 6, 2011
8008922 Ballast and wiring lamp fixture tester Aug. 30, 2011
7986287 Display device and method of driving the same Jul. 26, 2011
7859267 Testing device for lighting means Dec. 28, 2010
7847563 Test system Dec. 7, 2010
7759873 Electronic lamp identification system Jul. 20, 2010
7514931 Solar simulator and method for driving the same Apr. 7, 2009
7119707 Circuit for providing electrical current to a bicycle device Oct. 10, 2006
6972755 Driver circuit for a display device Dec. 6, 2005
6870371 Method and apparatus for examining plasma display panel electrodes using frequency characteristics Mar. 22, 2005
6777942 Operating device for gas discharge lamps with detection of filament breakage Aug. 17, 2004
6600425 Method and apparatus for detecting and recording episodic overloads in a circuit Jul. 29, 2003
6559591 Removable grounding strip for anti-reflective films on cathode ray tubes and method of using same May. 6, 2003
6538448 Determining remaining operating life of fluorescent lamp Mar. 25, 2003
6480001 Repair device for decorative light shunt Nov. 12, 2002
6066951 External light tester May. 23, 2000
5989824 Apparatus and method for lysing bacterial spores to facilitate their identification Nov. 23, 1999
5973498 EDM with jump motion detecting reactive force Oct. 26, 1999
5952832 Diagnostic circuit and method for predicting fluorescent lamp failure by monitoring filament currents Sep. 14, 1999
5744961 Lamp disconnection detecting device for identifying a specific lamp which has become disconnected Apr. 28, 1998
5565781 Device for detecting the malfunctioning of a load such as a magnetron Oct. 15, 1996
5528147 Apparatus for detecting gas discharge lamp faults Jun. 18, 1996
5202636 Method of non-destructive lamp testing by sensing light output Apr. 13, 1993
5179339 Holiday light bulb tester with light bulb socket insertable probes Jan. 12, 1993
5089749 Method and apparatus for measuring output of a heat lamp for an optical TLD reader Feb. 18, 1992
5086276 Method of determining condensate location in an HID lamp Feb. 4, 1992
5047721 Faulty lamp tester Sep. 10, 1991
4695803 HID lamp ballast tester Sep. 22, 1987
4673884 Circuit for measuring the anode current in an X-ray tube Jun. 16, 1987
4550273 Eight electrode optical readout gap Oct. 29, 1985
4453128 Digital display testing circuit Jun. 5, 1984
4336492 Apparatus for testing an hermetic seal in a glass cathode ray tube Jun. 22, 1982
4301409 Solar cell anomaly detection method and apparatus Nov. 17, 1981
4145142 Apparatus for and method of testing direct-view image intensifiers Mar. 20, 1979
4097793 X-ray testing system Jun. 27, 1978

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