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发明名称
Trailer towing device
摘要
申请公布号
US2622891(A)
申请公布日期
1952.12.23
申请号
US19500144019
申请日期
1950.02.13
申请人
RISER M. SIMPSON
发明人
KNAPP FRANKLIN EARL
分类号
A01B69/00;B62D53/08;B62D63/06
主分类号
A01B69/00
代理机构
代理人
主权项
地址
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