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发明名称
SNOW PLOUGH
摘要
申请公布号
CA444240(A)
申请公布日期
1947.09.23
申请号
CAD444240
申请日期
申请人
EDWARD L. WIEDMAN
发明人
EDWARD L. WIEDMAN
分类号
主分类号
代理机构
代理人
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