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经营范围
发明名称
Perfectionnement apporté dans l'établissement des silencieux pour armes à feu, moteurs à combustion et autres engins, produisant un bruit de détonation sous ciel ouvert
摘要
申请公布号
FR693455(A)
申请公布日期
1930.11.20
申请号
FRD693455
申请日期
1930.04.07
申请人
发明人
WILMAN JOSEPH
分类号
F41A21/30
主分类号
F41A21/30
代理机构
代理人
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