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发明名称
Stimmgabelsummer
摘要
申请公布号
DE560803(C)
申请公布日期
1932.10.07
申请号
DE1928S088853D
申请日期
1928.12.11
申请人
SIEMENS & HALSKE AKT.-GES.
发明人
FREY AUGUST
分类号
H04M19/02
主分类号
H04M19/02
代理机构
代理人
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地址
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