G09F2013/1809 - CPC Classification

Illuminated signs; Luminous advertising; Edge-illuminated signs; Achieving homogeneous illumination using a non-homogeneous front window

• G09F2013/1813 » {provided with a coating showing a pattern of dots of variable density} 2
• G09F2013/1818 » {provided with a coating of variable thickness} 0

Recent Application in this class: