78228165
Mar 20, 2003
Architectural window products (Windows, Skylights, Interior Partitions, etc) that incorporate Suspended Particle Device (SPD) light-valve technology Suspended particle devices (SPDs) - electrically operated light-control devices using proprietary particle suspensions and films SPD technology allows you to instantly and precisely control how clear or dark glass or plastic is, and adjust its light transmission by either turning a knob to control the applied voltage or having the device automatically adjust itself by means of a photocell or other sensing or control device
Electrical and Scientific Apparatus