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发明名称
Trailer hitch
摘要
申请公布号
US2521132(A)
申请公布日期
1950.09.05
申请号
US19480005591
申请日期
1948.01.31
申请人
SMITH WALTER N
发明人
SMITH WALTER N.
分类号
B60D1/06
主分类号
B60D1/06
代理机构
代理人
主权项
地址
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