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发明名称
Piggyback trailer hitch for railway cars
摘要
申请公布号
US3252432(A)
申请公布日期
1966.05.24
申请号
US19640382210
申请日期
1964.07.13
申请人
A. O. SMITH CORPORATION
发明人
HARTZELL HERSCHELL H.
分类号
B61D45/00
主分类号
B61D45/00
代理机构
代理人
主权项
地址
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