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发明名称
Tone arm
摘要
申请公布号
US2542534(A)
申请公布日期
1951.02.20
申请号
US19450574052
申请日期
1945.01.23
申请人
PFANSTIEHL CHEMICAL CO.
发明人
JOHN ROBERT S.
分类号
G11B3/02
主分类号
G11B3/02
代理机构
代理人
主权项
地址
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