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经营范围
发明名称
Formmembran
摘要
申请公布号
DE715333(C)
申请公布日期
1941.12.19
申请号
DE1936T047386D
申请日期
1936.08.29
申请人
TELEFUNKEN GESELLSCHAFT FUER DRAHTLOSE TELEGRAPHIE M.B.H.
发明人
分类号
H04R7/12
主分类号
H04R7/12
代理机构
代理人
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