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经营范围
发明名称
Magnetic sound recording apparatus
摘要
申请公布号
GB716193(A)
申请公布日期
1954.09.29
申请号
GB19510019965
申请日期
1951.08.24
申请人
SIEGMUND LOEWE
发明人
分类号
G11B25/00
主分类号
G11B25/00
代理机构
代理人
主权项
地址
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