DIFF Subgroup
F27B 9/04 adapted for treating the charge in vacuum or special atmosphere
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity > adapted for treating the charge in vacuum or special atmosphere
CPC:
Furnaces through which the charge is moved mechanically, e.g. of tunnel type (rotary-drum furnaces with means for agitating or moving the charge F27B7/14); Similar furnaces in which the charge moves by gravity > adapted for treating the charge in vacuum or special atmosphere
Of 2 combined children, 0 exist in both systems.
2 codes are CPC-only extensions.
Child Classifications
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