77750031
Jun 2, 2009
Electric light dimmers; Electric light switches; Electronic LED signs; Electronic regulating and control devices for the operation of light emitting diodes; LED and HID light controls; Light diodes; Light emitting diode (LED)displays; Light emitting diodes (LEDs); Luminous variable/dynamic signs using light emitting diodes and electronic controllers to produce real-time and programmable messages and information displays
Electrical and Scientific Apparatus