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发明名称
Polycyclic condensation products and intermediate products thereof
摘要
申请公布号
US2193674(A)
申请公布日期
1940.03.12
申请号
US19380221013
申请日期
1938.07.23
申请人
WINTHROP CHEMICAL COMPANY, INC.
发明人
HABERLAND GERHARDT
分类号
主分类号
代理机构
代理人
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