DIFF Subgroup
A63H 1/18 Double tops; Multiple tops mounted in or on one another
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Tops > Double tops; Multiple tops mounted in or on one another
CPC:
Tops (diabolos or similar thrown and caught spinning tops or throwing and catching devices therefor A63B67/16; flying tops ) > Double tops; Multiple tops mounted in or on one another
No child classifications to compare. This is a leaf node in both IPC and CPC.