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经营范围
发明名称
Method for discovering definite parts of moved sound carriers
摘要
申请公布号
GB721982(A)
申请公布日期
1955.01.19
申请号
GB19520025637
申请日期
1952.10.13
申请人
LOEWE OPTA AKTIENGESELLSCHAFT
发明人
分类号
G11B27/13
主分类号
G11B27/13
代理机构
代理人
主权项
地址
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