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发明名称
Rail bond
摘要
申请公布号
US2244248(A)
申请公布日期
1941.06.03
申请号
US19400332466
申请日期
1940.04.30
申请人
DUQUESNE MINE SUPPLY COMPANY
发明人
GENTER ALBERT H.
分类号
B60M5/00
主分类号
B60M5/00
代理机构
代理人
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