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发明名称
ATEMSCHUTZMASKE MIT EINGEBAUTEM MIKROFON.
摘要
申请公布号
DE1821560(U)
申请公布日期
1960.11.10
申请号
DE195900H1308U
申请日期
1959.03.21
申请人
HAGENUK VORM. NEUFELDT & KUHNKE G.M.B.H.
发明人
分类号
主分类号
代理机构
代理人
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