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发明名称
Perfectionnements à la fabrication des matériaux réfractaires
摘要
申请公布号
FR920202(A)
申请公布日期
1947.04.01
申请号
FRD920202
申请日期
1945.12.28
申请人
PERMANENTE CEMENT COMPANY
发明人
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主分类号
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