DIFF Subgroup
F27B 9/10 heated by hot air or gas
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 > heated without contact between combustion gases and charge; electrically heated > heated by hot air or gas
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 > heated without contact between combustion gases and charge; electrically heated > heated by hot air or gas
No child classifications to compare. This is a leaf node in both IPC and CPC.