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发明名称
CONTACT SULPHURIC ACID PROCESS
摘要
申请公布号
CA306380(A)
申请公布日期
1930.12.02
申请号
CAD306380
申请日期
申请人
THE SELDEN COMPANY
发明人
ALPHONS O. JAEGER
分类号
主分类号
代理机构
代理人
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