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发明名称
Ballast cleaner
摘要
申请公布号
US3326298(A)
申请公布日期
1967.06.20
申请号
US19640417440
申请日期
1964.12.10
申请人
FRANK SPENO RAILROAD BALLAST CLEANING CO.
发明人
SPENO MARTIN J.
分类号
E01B27/10
主分类号
E01B27/10
代理机构
代理人
主权项
地址
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