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发明名称
Traction device
摘要
申请公布号
US2443319(A)
申请公布日期
1948.06.15
申请号
US19460651487
申请日期
1946.03.02
申请人
WHEELING STEEL CORPORATION
发明人
MACK WAYNE E.
分类号
B60B39/12
主分类号
B60B39/12
代理机构
代理人
主权项
地址
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