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发明名称
Railroad maintenance device
摘要
申请公布号
US3177813(A)
申请公布日期
1965.04.13
申请号
US19600055071
申请日期
1960.09.09
申请人
KENNETH STEWART JOHN
发明人
STEWART JOHN KENNETH
分类号
E01B27/16
主分类号
E01B27/16
代理机构
代理人
主权项
地址
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