An illustrated incandescent light bulb appears on the side of a box of Westinghouse light bulbs in the warehouse of Kennedy Webster Electric Co. in Downers Grove, Illinois, U.S., on Tuesday, July 19, 2011. Photographer: Daniel Acker/Bloomberg
A Westinghouse 100 watt incandescent light bulb sits in a box in the warehouse of Kennedy Webster Electric Co. in Downers Grove, Illinois, U.S., on Tuesday, July 19, 2011. Photographer: Daniel Acker/Bloomberg
Fluorescent light bulbs sit on a shelf in the warehouse of Kennedy Webster Electric Co. in Downers Grove, Illinois, U.S., on Tuesday, July 19, 2011. Photographer: Daniel Acker/Bloomberg
