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PCE
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CPC Subgroup
F42B 4/24

characterised by having plural successively-ignited charges (in aerial display rockets F42B4/14)

Full Title

Fireworks, i.e. pyrotechnic devices for amusement, display, illumination or signal purposes (signalling by explosives G08B; advertising by fireworks G09F13/46; ) > characterised by having plural successively-ignited charges (in aerial display rockets F42B4/14)