DIFF Main Group
F27B 3/00 Hearth-type furnaces, e.g. of reverberatory type (F27B9/00, F27B11/00, F27B13/00, F27B14/00, F27B15/00, F27B21/00 take precedence); Electric arc furnaces
Introduced: September 1968
Title
Titles differ between systems:
IPC: Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces
CPC: Hearth-type furnaces, e.g. of reverberatory type (F27B9/00, F27B11/00, F27B13/00, F27B14/00, F27B15/00, F27B21/00 take precedence); Electric arc furnaces
Full Title
Full titles differ between systems:
IPC:
Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces
CPC:
Hearth-type furnaces, e.g. of reverberatory type (F27B9/00, F27B11/00, F27B13/00, F27B14/00, F27B15/00, F27B21/00 take precedence); Electric arc furnaces
Of 6 combined children, 5 exist in both systems.
1 codes are CPC-only extensions.
1 shared codes have differing titles between IPC and CPC.
Child Classifications
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- F27B 3/04 of multiple-hearth type; of multiple-chamber type; Combinations of hearth-type furnaces +1 CPC IPC+CPC Available in IPC and CPC
- F27B 3/06 with movable working chambers or hearths, e.g. tiltable +1 CPC IPC+CPC Available in IPC and CPC
- F27B 3/08 heated electrically, with or without any other source of heat +1 CPC IPC+CPC Available in IPC and CPC
- F27B 3/10 Details, accessories or equipment, e.g. dust-collectors, specially adapted for hearth-type furnaces +1 CPC IPC+CPC Available in IPC and CPC