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发明名称
Phonograph needle
摘要
申请公布号
US2495934(A)
申请公布日期
1950.01.31
申请号
US19450617728
申请日期
1945.09.21
申请人
KONDRATH ANDREW D
发明人
KONDRATH ANDREW D.
分类号
B23P5/00;G11B3/48
主分类号
B23P5/00
代理机构
代理人
主权项
地址
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