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经营范围
发明名称
OIL EXTRACTION PROCESS
摘要
申请公布号
CA370859(A)
申请公布日期
1937.12.28
申请号
CAD370859
申请日期
申请人
THE SHELL DEVELOPMENT COMPANY
发明人
WILLEM J. D. VAN DIJCK
分类号
主分类号
代理机构
代理人
主权项
地址
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