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发明名称
PROCESS OF TREATING SHALES OR OTHER LIKE OIL-BEARING MINERALS
摘要
申请公布号
CA297909(A)
申请公布日期
1930.03.04
申请号
CAD297909
申请日期
申请人
NAT HARRIS FREEMAN
发明人
NAT HARRIS FREEMAN
分类号
主分类号
代理机构
代理人
主权项
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