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发明名称
PHONOGRAPH NEEDLE
摘要
申请公布号
CA506484(A)
申请公布日期
1954.10.12
申请号
CAD506484
申请日期
申请人
PFANSTIEHL CHEMICAL CO.
发明人
FREDERICK C. HOLTZ, JR.
分类号
主分类号
代理机构
代理人
主权项
地址
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