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发明名称
Slot holder
摘要
申请公布号
US2506219(A)
申请公布日期
1950.05.02
申请号
US19480047721
申请日期
1948.09.03
申请人
JAMES ROBERT B
发明人
JAMES ROBERT B.
分类号
B21F3/06;H02K15/04
主分类号
B21F3/06
代理机构
代理人
主权项
地址
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