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发明名称
Improvements in or relating to polyvinyl acetal colour-formers
摘要
申请公布号
GB652928(A)
申请公布日期
1951.05.02
申请号
GB19480001337
申请日期
1948.01.15
申请人
E. I. DUPONT DE NEMOURS & COMPANY
发明人
分类号
C08F8/30
主分类号
C08F8/30
代理机构
代理人
主权项
地址
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