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发明名称
ELEKTROAKUSTISCHER WANDLER MIT DAEMPFUNGSRING.
摘要
申请公布号
DE1767063(U)
申请公布日期
1958.05.22
申请号
DE195800L0450U
申请日期
1958.02.19
申请人
LABORATORIUM WENNEBOSTEL DR.-ING. SENNHEISER
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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