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发明名称
Tone arm
摘要
申请公布号
US2222552(A)
申请公布日期
1940.11.19
申请号
US19390310491
申请日期
1939.12.22
申请人
WEBSTER ELECTRIC COMPANY
发明人
DALLY ROY
分类号
G11B3/02;H04R11/08
主分类号
G11B3/02
代理机构
代理人
主权项
地址
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