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发明名称
Scraper
摘要
申请公布号
US2051197(A)
申请公布日期
1936.08.18
申请号
US19320646942
申请日期
1932.12.13
申请人
W. L. ADAMS
发明人
BIRD LEN O.
分类号
E02F3/64
主分类号
E02F3/64
代理机构
代理人
主权项
地址
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