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发明名称
DISCHARGE UNIT FOR RAILWAY HOPPER CARS
摘要
申请公布号
CA874758(A)
申请公布日期
1971.07.06
申请号
CAD874758
申请日期
申请人
KEYSTONE INDUSTRIES
发明人
JAMES T. SMITH
分类号
主分类号
代理机构
代理人
主权项
地址
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