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发明名称
TRACTION WHEEL
摘要
申请公布号
CA389409(A)
申请公布日期
1940.06.18
申请号
CAD389409
申请日期
申请人
JOHN M. UNSELD
发明人
JOHN M. UNSELD
分类号
主分类号
代理机构
代理人
主权项
地址
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