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经营范围
发明名称
RAILGRINDER
摘要
申请公布号
CA584230(A)
申请公布日期
1959.09.29
申请号
CAD584230
申请日期
申请人
FRANK SPENO RAILROAD BALLAST CLEANING CO.
发明人
FRANK SPENO, JR.;GEORGE C. SHAY
分类号
主分类号
代理机构
代理人
主权项
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