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PCE
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DIFF Subgroup
F23M 3/12

characterised by shape or construction

Introduced: September 1968

Full Title

Firebridges > characterised by shape or construction

IPC and CPC are identically structured here. All 4 subcodes exist in both systems.

Child Classifications

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  • F23M 3/14 with apertures for passage of combustion products IPC+CPC Available in IPC and CPC
  • F23M 3/16 built-up in sections, e.g. using bars or blocks IPC+CPC Available in IPC and CPC
  • F23M 3/18 double; multiple IPC+CPC Available in IPC and CPC
  • F23M 3/20 comprising loose refractory material, wholly or in part IPC+CPC Available in IPC and CPC