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发明名称
PROCESS OF TREATING COMMINUTED CARBONACEOUS MATERIALS
摘要
申请公布号
CA311219(A)
申请公布日期
1931.05.12
申请号
CAD311219
申请日期
申请人
JOHN J. NAUGLE
发明人
JOHN J. NAUGLE
分类号
主分类号
代理机构
代理人
主权项
地址
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