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Patent Classification Explorer PCE

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Search for IPC and CPC classification codes or keywords

F
F23
F23N
F23N 2221/00
F23N 2221/08

CPC Subgroup Additional Only

F23N 2221/08

Preheating the air

Full Title

Pretreatment or prehandling > Preheating the air

CPC F23N 2221/08

No direct equivalent in IPC

6 CPC-only subgroups

F23N 2221/06 F23N 2221/10

Data: WIPO (IPC), EPO/USPTO (CPC) — CC BY 4.0

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