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发明名称
Phonograph needle
摘要
申请公布号
US2553822(A)
申请公布日期
1951.05.22
申请号
US19480020327
申请日期
1948.04.10
申请人
PFANSTIEHL CHEMICAL COMPANY
发明人
JR. FREDERICK C. HOLTZ,
分类号
G11B3/48
主分类号
G11B3/48
代理机构
代理人
主权项
地址
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