DIFF Subgroup
E06B 5/20 for insulation against noise
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Doors, windows, or like closures for special purposes; Border constructions therefor > for insulation against noise
CPC:
Doors, windows, or like closures for special purposes ; Border constructions therefor > for insulation against noise
Of 1 combined children, 0 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
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