DIFF Subgroup
F24F 7/02 Roof ventilation (ventilation of roof coverings E04D)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Roof ventilation
CPC: Roof ventilation (ventilation of roof coverings E04D)
Full Title
Full titles differ between systems:
IPC:
Ventilation > Roof ventilation
CPC:
Ventilation > Roof ventilation (ventilation of roof coverings E04D)
Of 1 combined children, 0 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
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