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发明名称
Scraper
摘要
申请公布号
US1775206(A)
申请公布日期
1930.09.09
申请号
US19280323946
申请日期
1928.12.05
申请人
MCCANDLISS EDGAR S
发明人
MCCANDLISS EDGAR S.
分类号
E02F3/60
主分类号
E02F3/60
代理机构
代理人
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