DIFF Subgroup
G09B 19/20 Needlework
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Teaching not covered by other main groups of this subclass > Needlework
CPC:
Teaching not covered by other main groups of this subclass (teaching or practice apparatus for gun-aiming or gun-laying F41G3/26) > Needlework
No child classifications to compare. This is a leaf node in both IPC and CPC.