CPC Subgroup
G09F 21/06 by aeroplanes, airships, balloons, or kites
Full Title
Mobile visual advertising (combined visual and audible advertising G09F27/00) > by aeroplanes, airships, balloons, or kites
3 direct subcodes
Child Classifications
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- G09F 21/08 the advertising matter being arranged on the aircraft
- G09F 21/12 the advertising matter being towed by the aircraft
- G09F 21/16 Sky-writing