DIFF Subgroup
A63D 15/16 Chalk holders
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Billiards, e.g. carom billiards or pocket billiards; Billiard tables > Chalk holders
CPC:
Billiards, e.g. carom billiards or pocket billiards; Billiard tables (bagatelle A63D13/00) > Chalk holders
No child classifications to compare. This is a leaf node in both IPC and CPC.