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发明名称
Trailer hitch
摘要
申请公布号
US2511257(A)
申请公布日期
1950.06.13
申请号
US19470737182
申请日期
1947.03.25
申请人
GREWE DAN C
发明人
GREWE DAN C.
分类号
B60D1/44
主分类号
B60D1/44
代理机构
代理人
主权项
地址
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