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DIFF Subgroup
G09B 19/04

Speaking (with audible presentation of the material to be studied G09B5/04)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Speaking

CPC: Speaking (with audible presentation of the material to be studied G09B5/04)

Full Title

Full titles differ between systems:

IPC:

Teaching not covered by other main groups of this subclass > Speaking

CPC:

Teaching not covered by other main groups of this subclass (teaching or practice apparatus for gun-aiming or gun-laying F41G3/26) > Speaking (with audible presentation of the material to be studied G09B5/04)

No child classifications to compare. This is a leaf node in both IPC and CPC.