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发明名称
Phonograph needle guard
摘要
申请公布号
US2417814(A)
申请公布日期
1947.03.25
申请号
US19450578224
申请日期
1945.02.16
申请人
WEBSTER-CHICAGO CORPORATION
发明人
DALE COLIN B.
分类号
G11B3/12
主分类号
G11B3/12
代理机构
代理人
主权项
地址
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