DIFF Subgroup
F22B 31/04 Heat supply by installation of two or more combustion apparatus, e.g. of separate combustion apparatus for the boiler and the superheater respectively
Introduced: September 1968
Full Title
Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements or dispositions of combustion apparatus > Heat supply by installation of two or more combustion apparatus, e.g. of separate combustion apparatus for the boiler and the superheater respectively
Of 2 combined children, 1 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
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