发明授权
US4201385A Sound insulated target apparatus with projectile butt container 失效
隔音目标仪器带抛丸对接容器

Sound insulated target apparatus with projectile butt container
摘要:
A target apparatus which comprises a container and butt walls within it, the container and butt walls carrying noise deadening material whereby the target apparatus may be used close to inhabited areas or even indoors without disturbing other people owing to the noise.
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