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经营范围
发明名称
Improvements in or relating to pick-up arms for gramophones
摘要
申请公布号
GB519801(A)
申请公布日期
1940.04.05
申请号
GB19380028735
申请日期
1938.10.04
申请人
FREDERICK WILLIAM CACKETT
发明人
分类号
G11B3/08
主分类号
G11B3/08
代理机构
代理人
主权项
地址
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