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发明名称
PIGGYBACK TRAILER HITCH FOR RAILWAY CARS
摘要
申请公布号
CA782296(A)
申请公布日期
1968.04.09
申请号
CAD782296
申请日期
申请人
A.O. SMITH CORPORATION
发明人
HERSCHELL H. HARTZELL
分类号
主分类号
代理机构
代理人
主权项
地址
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