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发明名称
Scraper bowl
摘要
申请公布号
US2258038(A)
申请公布日期
1941.10.07
申请号
US19400347893
申请日期
1940.07.27
申请人
WALTER A. CLARK
发明人
TITUS GORDON
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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