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发明名称
RAILWAY CAR HOPPER DOOR
摘要
申请公布号
CA322129(A)
申请公布日期
1932.05.03
申请号
CAD322129
申请日期
申请人
THE UNION METAL PRODUCTS COMPANY OF CANADA
发明人
GARTH GRIFFITH GILPIN
分类号
主分类号
代理机构
代理人
主权项
地址
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