8e84d47c_ICAL_CONNECTIONS___Patents_com__Description
[Patent #] 2012/0068618 [Description] 
COMMUNICATION WITH LIGHTING UNITS OVER A POWER BUS A first entity communicates with a second entity over a shared power bus by switching the bus to a high-impedance state and modifying the voltage on the power...
Applications filed at Mar 22 2012 | LIGHTING DEVICE WITH MULTIPLE ELECTRICAL CONNECTIONS | Patents.com
Description