Chemical Composition Of Glasses, Glazes Or Vitreous Enamels; Surface Treatment Of Glass; Surface Treatment Of Fibres Or Filaments Made From Glass, Minerals Or Slags; Joining Glass To Glass Or Other Materials
C03B
Manufacture, Shaping, Or Supplementary Processes
G02B
Optical Elements, Systems Or Apparatus
B32B
Layered Products, I.e. Products Built-up Of Strata Of Flat Or Non-flat, E.g. Cellular Or Honeycomb, Form
Y10T
Technical Subjects Covered By Former Us Classification