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发明名称
Mounting for phonographic pick-up devices
摘要
申请公布号
GB357102(A)
申请公布日期
1931.09.14
申请号
GB19300007718
申请日期
1930.03.10
申请人
NORTH AMERICAN SOUND & TALKING PICTURE EQUIPMENT CORPORATION
发明人
分类号
G11B3/60;G11B33/02
主分类号
G11B3/60
代理机构
代理人
主权项
地址
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