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Publication of BE402710ApublicationCriticalpatent/BE402710A/xx
F41J5/00—Target indicating systems; Target-hit or score detecting systems
F41J5/24—Targets producing a particular effect when hit, e.g. detonation of pyrotechnic charge, bell ring, photograph
F41J5/26—Targets producing a particular effect when hit, e.g. detonation of pyrotechnic charge, bell ring, photograph exploding or disintegrating when hit