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发明名称
Purification process
摘要
申请公布号
US2897244(A)
申请公布日期
1959.07.28
申请号
US19570647671
申请日期
1957.03.21
申请人
GULF RESEARCH & DEVELOPMENT COMPANY
发明人
SELWITZ CHARLES M.
分类号
C07C29/92
主分类号
C07C29/92
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代理人
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