DIFF Subgroup
A47L 25/04 for door-knobs
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Domestic cleaning devices not provided for in other groups of this subclass > for door-knobs
CPC:
Domestic cleaning devices not provided for in other groups of this subclass (for cleaning spectacles G02C13/00) > for door-knobs
No child classifications to compare. This is a leaf node in both IPC and CPC.