CPC Subgroup
C03B 27/04 using gas
Full Title
Tempering glass products > using gas
7 direct subcodes
Child Classifications
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- C03B 27/044 for flat or bent glass sheets being in a horizontal position
- C03B 27/052 for flat or bent glass sheets being in a vertical position
- C03B 27/06 for glass products other than flat or bent glass plates, e.g. hollow glassware, lenses