Technology patents for sale available from Crystalens Ltd. Electron eyewear that changes darkness instantaneously. Selling price? Please contact the Technical Director.
Patent numbers: US6,433770 and US6,501,4437,070,342 Contact: Hyman Gross Address: Sheraton House, Castle Park, Cambridge, CB3 0AX, UK Phone: +44 1223 462244 E-mail: peterwlk@hotmail.com
