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经营范围
发明名称
Scraper attachment
摘要
申请公布号
US2139769(A)
申请公布日期
1938.12.13
申请号
US19370156124
申请日期
1937.07.28
申请人
OSLUND OSKAR E V
发明人
OSLUND OSKAR E. V.
分类号
B44D3/16
主分类号
B44D3/16
代理机构
代理人
主权项
地址
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