DIFF Main Group
C03B 40/00 Preventing adhesion between glass and glass or between glass and the means used to shape it
Introduced: January 1980
Of 3 combined children, 2 exist in both systems.
1 codes are CPC-only extensions.
IPC defines codes here since 1980.
Child Classifications
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- C03B 40/02 by lubrication; Use of materials as release or lubricating compositions since 1980 IPC+CPC Available in IPC and CPC