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发明名称
Tractor chain
摘要
申请公布号
US1849729(A)
申请公布日期
1932.03.15
申请号
US19300437476
申请日期
1930.03.20
申请人
BALL WAGON GRADER COMPANY
发明人
BALL CHARLES E.
分类号
B62D55/22
主分类号
B62D55/22
代理机构
代理人
主权项
地址
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