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发明名称
OHREINSATZ ALS SCHALLLEITER BEI HOERGERAETEN FUER SCHWERHOERIGE.
摘要
申请公布号
DE1653275(U)
申请公布日期
1953.04.02
申请号
DE195200V2321U
申请日期
1952.09.01
申请人
DR. MED. ALBERT VOLZ
发明人
DR. MED. ALBERT VOLZ
分类号
主分类号
代理机构
代理人
主权项
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