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经营范围
发明名称
Procédé de fabrication du corindon
摘要
申请公布号
FR1195807(A)
申请公布日期
1959.11.19
申请号
FRD1195807
申请日期
1958.05.10
申请人
PETER SPENCE & SONS LIMITED;DEUTSCHE GOLD- UND SILBER-SCHEIDEANSTALT VORMALS ROESSLER
发明人
分类号
B01J21/04;C01F7/30
主分类号
B01J21/04
代理机构
代理人
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