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经营范围
发明名称
Mikrotelephon.
摘要
申请公布号
AT121900(B)
申请公布日期
1931.03.25
申请号
ATD121900
申请日期
1929.10.22
申请人
SIEMENS & HALSKE AKTIENGESELLSCHAFT
发明人
OTTO SOLDAN
分类号
主分类号
代理机构
代理人
主权项
地址
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