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发明名称
Scraper
摘要
申请公布号
US2162117(A)
申请公布日期
1939.06.13
申请号
US19370181310
申请日期
1937.12.23
申请人
PERRY HARLAN A
发明人
PERRY HARLAN A.
分类号
B44D3/16
主分类号
B44D3/16
代理机构
代理人
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