Heat or noise insulation (air intakes having provisions for noise suppression F02C7/045; turbine exhaust heads, chambers, or the like F01D25/30; silencing nozzles of jet-propulsion plants F02K1/00)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Heat or noise insulation

CPC: Heat or noise insulation (air intakes having provisions for noise suppression F02C7/045; turbine exhaust heads, chambers, or the like F01D25/30; silencing nozzles of jet-propulsion plants F02K1/00)

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 > Heat or noise insulation

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) > Heat or noise insulation (air intakes having provisions for noise suppression F02C7/045; turbine exhaust heads, chambers, or the like F01D25/30; silencing nozzles of jet-propulsion plants F02K1/00)

IPC and CPC are identically structured here. All 1 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1980.

Child Classifications

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F02C 7/25 Fire protection or prevention (in general A62) since 1980 IPC+CPC Available in IPC and CPC