CPC Main Group
F23J 13/00 Fittings for chimneys or flues (side-supporting means for chimney stacks E04H12/20; ladders permanently attached to chimneys E06C9/00; draught-inducing apparatus associated with chimneys or flues F23L17/00; tops for chimneys, terminals for flues F23L17/02)
4 direct subcodes
Child Classifications
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- F23J 13/02 Linings; Jackets; Casings
- F23J 13/04 Joints; Connections
- F23J 13/06 Mouths; Inlet holes
- F23J 13/08 Doors or covers specially adapted for smoke-boxes, flues, or chimneys