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发明名称
CONVERSION PRODUCT FROM CARBONACEOUS MATERIALS
摘要
申请公布号
CA396862(A)
申请公布日期
1941.05.27
申请号
CAD396862
申请日期
申请人
THE PERMUTIT COMPANY
发明人
OTTO LIEBKNECHT
分类号
主分类号
代理机构
代理人
主权项
地址
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