79019793
Nov 29, 2005
Dec 19, 2006
FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
Optical lenses, namely optical lenses in combination with photovoltaic cells; optical lenses, namely optical lenses in combination with solar collectors; photovoltaic cells; apparatus for converting electronic radiation to electrical energy, namely photovoltaic solar modules
Electrical and Scientific Apparatus