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发明名称
Electromagnetic devices
摘要
申请公布号
US2897416(A)
申请公布日期
1959.07.28
申请号
US19580710955
申请日期
1958.01.24
申请人
PACKARD CHARLES A
发明人
PACKARD CHARLES A.
分类号
H01H50/30
主分类号
H01H50/30
代理机构
代理人
主权项
地址
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