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发明名称
DISC PLOUGH
摘要
申请公布号
CA312459(A)
申请公布日期
1931.06.23
申请号
CAD312459
申请日期
申请人
ALEXANDER M. CAMPBELL
发明人
ALEXANDER M. CAMPBELL
分类号
主分类号
代理机构
代理人
主权项
地址
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