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发明名称
Railway power ballaster
摘要
申请公布号
US2999467(A)
申请公布日期
1961.09.12
申请号
US19570686768
申请日期
1957.09.27
申请人
PULLMAN INCORPORATED
发明人
KNIPPEL WILLIS H.
分类号
E01B27/16;F15B11/16
主分类号
E01B27/16
代理机构
代理人
主权项
地址
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