using liquid

Introduced: January 1980

Full Title

Tempering glass products > using liquid

CPC subdivides this area 4x more granularly than IPC with 3 additional codes.

3 codes are CPC-only extensions.

IPC defines codes here since 1990.

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C03B 27/022 +1 CPC CPC only CPC only
C03B 27/026 CPC only CPC only
C03B 27/028 CPC only CPC only
C03B 27/03 the liquid being a molten metal or a molten salt since 1990 +1 CPC IPC+CPC Available in IPC and CPC