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发明名称
EXPANDING UNDERGROUND COMBUSTION DRIVE
摘要
申请公布号
CA774935(A)
申请公布日期
1968.01.02
申请号
CAD774935
申请日期
申请人
SHELL OIL COMPANY
发明人
MICHAEL PRATS
分类号
主分类号
代理机构
代理人
主权项
地址
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