by gravity

Introduced: January 1980

Full Title

Full titles differ between systems:

IPC:

Re-forming shaped glass > Re-forming glass sheets > by bending > by gravity

CPC:

Re-forming shaped glass (re-forming fibres or filaments C03B37/14) > Re-forming glass sheets > by bending > by gravity

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

3 codes are CPC-only extensions.

IPC defines codes here since 1980.

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C03B 23/0252 +1 CPC CPC only CPC only
C03B 23/0256 CPC only CPC only
C03B 23/0258 CPC only CPC only
C03B 23/027 with moulds having at least two upward pivotable mould sections since 1980 IPC+CPC Available in IPC and CPC