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发明名称
摘要
申请公布号
DE2157096(A1)
申请公布日期
1972.05.25
申请号
DE19712157096
申请日期
1971.11.17
申请人
STANDARD OIL CO OHIO
发明人
分类号
C01B31/08;(IPC1-7):C01B31/08
主分类号
C01B31/08
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代理人
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