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发明名称
Ballast tamping apparatus
摘要
申请公布号
US2587324(A)
申请公布日期
1952.02.26
申请号
US19480053518
申请日期
1948.10.08
申请人
HURSH
发明人
HURSH SAMUEL R.;REIGH CLARENCE J.
分类号
E01B27/17
主分类号
E01B27/17
代理机构
代理人
主权项
地址
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