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经营范围
发明名称
Grinding wheel dressing
摘要
申请公布号
US2298762(A)
申请公布日期
1942.10.13
申请号
US19410383197
申请日期
1941.03.13
申请人
GENERAL MOTORS CORPORATION
发明人
HEGEMAN FRANKLYN P.
分类号
B24B53/04
主分类号
B24B53/04
代理机构
代理人
主权项
地址
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