using gas

Child Classifications

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• C03B 27/0404 +1 CPC CPC only CPC only
• C03B 27/0413 CPC only CPC only
• C03B 27/0417 CPC only CPC only
• C03B 27/0422 +1 CPC CPC only CPC only
• C03B 27/044 for flat or bent glass sheets being in a horizontal position since 1990 +1 CPC IPC+CPC Available in IPC and CPC
• C03B 27/052 for flat or bent glass sheets being in a vertical position since 1990 +3 CPC IPC+CPC Available in IPC and CPC
• C03B 27/06 for glass products other than flat or bent glass plates, e.g. hollow glassware, lenses since 1980 +3 CPC IPC+CPC Available in IPC and CPC