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经营范围
发明名称
BACK PAD STRUCTURE
摘要
申请公布号
US3491494(A)
申请公布日期
1970.01.27
申请号
USD3491494
申请日期
1966.05.06
申请人
STANDARD ABRASIVES INC.
发明人
JOSEPH H. MACKAY JR.
分类号
B24D7/16;B24D9/08;(IPC1-7):B24D17/00
主分类号
B24D7/16
代理机构
代理人
主权项
地址
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