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发明名称
Tractor hitch
摘要
申请公布号
US1758951(A)
申请公布日期
1930.05.20
申请号
US19270232521
申请日期
1927.11.11
申请人
JOHNSON ELMO W
发明人
JOHNSON ELMO W.
分类号
B60D1/173
主分类号
B60D1/173
代理机构
代理人
主权项
地址
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