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经营范围
发明名称
Matière abrasive et sa préparation.
摘要
申请公布号
BE582486(A1)
申请公布日期
1960.03.09
申请号
BE19590582486
申请日期
1959.09.09
申请人
GENERAL ELECTRIC COMPANY
发明人
ROBERT H. WENTORF JR.
分类号
(IPC1-7):C01B
主分类号
(IPC1-7):C01B
代理机构
代理人
主权项
地址
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