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发明名称
Phonograph tone arm
摘要
申请公布号
US2873978(A)
申请公布日期
1959.02.17
申请号
US19540438518
申请日期
1954.06.22
申请人
COLUMBIA BROADCASTING SYSTEM, INC.
发明人
DONCASTER DANIEL P.
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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