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发明名称
TONTRAEGER FUER MAGNETISCHE AUFZEICHNUNGEN.
摘要
申请公布号
DE1683728(U)
申请公布日期
1954.09.23
申请号
DE195000Z0628U
申请日期
1950.10.17
申请人
ZEISS IKON A.G.
发明人
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主分类号
代理机构
代理人
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