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经营范围
发明名称
Ditch cleaner
摘要
申请公布号
US1765031(A)
申请公布日期
1930.06.17
申请号
US19270215407
申请日期
1927.08.25
申请人
WILLIAM PECK JOHN
发明人
PECK JOHN WILLIAM
分类号
E02F5/02
主分类号
E02F5/02
代理机构
代理人
主权项
地址
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