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发明名称
Resilient induction magnet
摘要
申请公布号
US2119811(A)
申请公布日期
1938.06.07
申请号
US19350036998
申请日期
1935.08.20
申请人
FRANK D. HAYES
发明人
GREEN MASON V.
分类号
G08G1/042
主分类号
G08G1/042
代理机构
代理人
主权项
地址
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