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发明名称
Scraper
摘要
申请公布号
US1746859(A)
申请公布日期
1930.02.11
申请号
US19270162481
申请日期
1927.01.21
申请人
HURD HERMAN M
发明人
HURD HERMAN M.
分类号
E01H5/02
主分类号
E01H5/02
代理机构
代理人
主权项
地址
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