DIFF Subgroup
F23H 1/04 having a variable burning surface
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Grates with solid bars > having a variable burning surface
CPC:
Grates with solid bars (double grates F23H5/00) > having a variable burning surface
No child classifications to compare. This is a leaf node in both IPC and CPC.