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PCE
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DIFF Subgroup
E04F 17/02

for carrying away waste gases, e.g. flue gases (free-standing chimneys E04H12/28; connections between fireplace and chimney, chimney fittings, covers for cleaning holes of chimneys F23J; chimney tops F23L); Building elements specially designed therefor, e.g. shaped bricks or sets thereof

Introduced: September 1968

Title

Titles differ between systems:

IPC: for carrying away waste gases, e.g. flue gases; Building elements specially designed therefor, e.g. shaped bricks or sets thereof

CPC: for carrying away waste gases, e.g. flue gases (free-standing chimneys E04H12/28; connections between fireplace and chimney, chimney fittings, covers for cleaning holes of chimneys F23J; chimney tops F23L); Building elements specially designed therefor, e.g. shaped bricks or sets thereof

Full Title

Full titles differ between systems:

IPC:

Vertical ducts; Channels, e.g. for drainage > for carrying away waste gases, e.g. flue gases; Building elements specially designed therefor, e.g. shaped bricks or sets thereof

CPC:

Vertical ducts; Channels, e.g. for drainage (pipes in general F16L; pipe-line systems F17D ) > for carrying away waste gases, e.g. flue gases (free-standing chimneys E04H12/28; connections between fireplace and chimney, chimney fittings, covers for cleaning holes of chimneys F23J; chimney tops F23L); Building elements specially designed therefor, e.g. shaped bricks or sets thereof

Of 2 combined children, 0 exist in both systems.

2 codes are CPC-only extensions.

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