CPC Subgroup
G09B 19/24 Use of tools
Full Title
Teaching not covered by other main groups of this subclass (teaching or practice apparatus for gun-aiming or gun-laying F41G3/26) > Use of tools
G09B 19/24 Teaching not covered by other main groups of this subclass (teaching or practice apparatus for gun-aiming or gun-laying F41G3/26) > Use of tools