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发明名称
Adjustable coil-winding core
摘要
申请公布号
US2809674(A)
申请公布日期
1957.10.15
申请号
US19540455962
申请日期
1954.09.14
申请人
WARD JOHN W
发明人
WARD JOHN W.
分类号
B65H54/58;B65H75/24;H01F5/02
主分类号
B65H54/58
代理机构
代理人
主权项
地址
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