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发明名称
Perfectionnements aux procédés et aux machines pour le travail de la silice fondue
摘要
申请公布号
FR686989(A)
申请公布日期
1930.08.01
申请号
FRD686989
申请日期
1929.12.20
申请人
COMPAGNIE FRANCAISE POUR L'EXPLOITATION DES PROCEDES THOMSON-HOUSTON
发明人
分类号
C03B23/07
主分类号
C03B23/07
代理机构
代理人
主权项
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