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经营范围
发明名称
Abrasive material and preparation thereof
摘要
申请公布号
US2947617(A)
申请公布日期
1960.08.02
申请号
US19580707434
申请日期
1958.01.06
申请人
GENERAL ELECTRIC COMPANY
发明人
JR. ROBERT H. WENTORF,
分类号
B01J3/06;B24D18/00;C01B21/064;C04B35/5831;C09K3/14
主分类号
B01J3/06
代理机构
代理人
主权项
地址
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