CPC Subgroup
F42B 4/22 characterised by having means to separate article or charge from casing without destroying the casing (in aerial display rockets F42B4/10)
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 means to separate article or charge from casing without destroying the casing (in aerial display rockets F42B4/10)