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发明名称
Road magnet
摘要
申请公布号
US1961336(A)
申请公布日期
1934.06.05
申请号
US19310552435
申请日期
1931.07.22
申请人
MUSKEGON RELIABLE TIRE & ACCESSORIES CO.
发明人
CLOSE RALPH B.
分类号
H01F7/20
主分类号
H01F7/20
代理机构
代理人
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