Forming, maintaining or circulating atmospheres in heating chambers

Introduced: September 1968

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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F27D 7/02 Supplying steam, vapour, gases or liquids +2 CPC IPC+CPC Available in IPC and CPC
F27D 7/04 Circulating atmospheres by mechanical means +1 CPC IPC+CPC Available in IPC and CPC
F27D 7/06 Forming or maintaining special atmospheres or vacuum within heating chambers (supplying steam, vapour, gases or liquids F27D7/02) +2 CPC IPC+CPC Available in IPC and CPC

Class F27,2013–2023, worldwide · Source: EPO PATSTAT

Class F27,2013–2023, worldwide · Source: EPO PATSTAT