8e84d47c_ICAL_CONNECTIONS___Patents_com__Description
[Patent #] 2012/0068607 [Description] 
SUPERVISION FOR A LIGHT DISPLAY DEVICE A device and method may include, in a display device, emitting visible light in a humanly imperceptible manner and sensing said light to verify operation of the...
Applications filed at Mar 22 2012 | LIGHTING DEVICE WITH MULTIPLE ELECTRICAL CONNECTIONS | Patents.com
Description