Devices for conducting smoke or fumes, e.g. flues (chimney stacks E04H12/28; removing cooking fumes from domestic stoves or ranges F24C15/20 )

Child Classifications

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• F23J 11/02 for conducting smoke or fumes originating from various locations to the outside, e.g. in locomotive sheds, in garages
• F23J 11/04 in locomotives; in road vehicles; in ships
• F23J 11/08 for portable apparatus
• F23J 11/10 for tents; for log huts; for other inflammable structures
• F23J 11/12 Smoke conduit systems for factories or large buildings