Sky-lights; Domes; Ventilating sky-lights (E04D13/14 takes precedence; structures therefor, E04B7/18; )

Introduced: September 1968

Title

Titles differ between systems:

IPC: Sky-lights; Domes; Ventilating sky-lights

CPC: Sky-lights; Domes; Ventilating sky-lights (E04D13/14 takes precedence; structures therefor, E04B7/18; )

Full Title

Full titles differ between systems:

IPC:

Special arrangements or devices in connection with roof coverings; Roof drainage > Sky-lights; Domes; Ventilating sky-lights

CPC:

Special arrangements or devices in connection with roof coverings; Roof drainage (ventilation tiles E04D1/30; ventilation slabs E04D3/40; internal channels E04F17/00) > Sky-lights; Domes; Ventilating sky-lights (E04D13/14 takes precedence; structures therefor, E04B7/18; )

CPC subdivides this area 7x more granularly than IPC with 6 additional codes.

6 codes are CPC-only extensions.

Child Classifications

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E04D 13/0305 +2 CPC CPC only CPC only
E04D 13/032 CPC only CPC only
E04D 13/0325 CPC only CPC only
E04D 13/033 CPC only CPC only
E04D 13/0335 CPC only CPC only
E04D 13/035 characterised by having movable parts +3 CPC IPC+CPC Available in IPC and CPC
E04D 2013/034 2nd only +1 CPC CPC only CPC only