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发明名称
Spinning ring
摘要
申请公布号
US2940245(A)
申请公布日期
1960.06.14
申请号
US19580767582
申请日期
1958.10.16
申请人
LADD LAWRENCE R
发明人
LADD LAWRENCE R.
分类号
D01H7/62
主分类号
D01H7/62
代理机构
代理人
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