DIFF Subgroup
C03C 15/025 Full Title
Surface treatment of glass, not in the form of fibres or filaments, by etching (etching or surface-brightening compositions, in general C09K13/00) > for making a smooth surface
C03C 15/025 Surface treatment of glass, not in the form of fibres or filaments, by etching (etching or surface-brightening compositions, in general C09K13/00) > for making a smooth surface