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经营范围
发明名称
Improved manufacture of quaternary ammonium compounds
摘要
申请公布号
GB647275(A)
申请公布日期
1950.12.06
申请号
GB19470033581
申请日期
1947.12.19
申请人
DR. A. WANDER, A.-G.
发明人
分类号
主分类号
代理机构
代理人
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