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经营范围
发明名称
LAUTSPRECHERBEFESTIGUNG.
摘要
申请公布号
DE1880333(U)
申请公布日期
1963.10.10
申请号
DE1963O007013U
申请日期
1963.04.23
申请人
OPTA SPEZIAL G.M.B.H.
发明人
分类号
主分类号
代理机构
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