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经营范围
发明名称
Scraper mechanism
摘要
申请公布号
US1759251(A)
申请公布日期
1930.05.20
申请号
US19270223868
申请日期
1927.10.04
申请人
CLAUSEN ANDREW J
发明人
CLAUSEN ANDREW J.
分类号
E01C19/42
主分类号
E01C19/42
代理机构
代理人
主权项
地址
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