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经营范围
发明名称
COAL CUTTING MACHINE
摘要
申请公布号
CA299753(A)
申请公布日期
1930.04.29
申请号
CAD299753
申请日期
申请人
THE JEFFREY MANUFACTURING CO.
发明人
NILS D. LEVIN
分类号
主分类号
代理机构
代理人
主权项
地址
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