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经营范围
发明名称
Wheeled scraper
摘要
申请公布号
US1947661(A)
申请公布日期
1934.02.20
申请号
US19310567182
申请日期
1931.10.06
申请人
LATHROP INVESTMENT CORPORATION
发明人
RICKS HYRUM
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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