having provisions for obviating the penetration of damaging objects or particles

Introduced: January 1980

Full Title

Full titles differ between systems:

IPC:

Features, component parts, details or accessories, not provided for in, or of interest apart from, groups; Air intakes for jet-propulsion plants > Air intakes for gas-turbine plants or jet-propulsion plants > having provisions for obviating the penetration of damaging objects or particles

CPC:

Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants (controlling F02C9/00) > Air intakes for gas-turbine plants or jet-propulsion plants > having provisions for obviating the penetration of damaging objects or particles

IPC and CPC are identically structured here. All 2 subcodes exist in both systems.

IPC defines codes here since 1980.

Child Classifications

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F02C 7/052 with dust-separation devices since 1980 IPC+CPC Available in IPC and CPC
F02C 7/055 with intake grids, screens or guards since 1980 IPC+CPC Available in IPC and CPC