Top IPC subclasses
1
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C03C
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3
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chemical composition of glasses, glazes, or vitreous enamelssurface treatment of glasssurface treatm
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2
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B44C
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1
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producing decorative effectsmosaicstarsia workpaperhanging
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3
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B32B
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1
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layered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb,
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