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经营范围
发明名称
Dirt conveyer
摘要
申请公布号
US2182139(A)
申请公布日期
1939.12.05
申请号
US19360096305
申请日期
1936.08.15
申请人
FRANK SPENO
发明人
SPENO FRANK
分类号
E01B27/06
主分类号
E01B27/06
代理机构
代理人
主权项
地址
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