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经营范围
发明名称
OIL EXTRACTION PROCESS
摘要
申请公布号
CA398485(A)
申请公布日期
1941.08.05
申请号
CAD398485
申请日期
申请人
SHELL DEVELOPMENT COMPANY
发明人
VERNON LANTZ
分类号
主分类号
代理机构
代理人
主权项
地址
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