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经营范围
发明名称
Lapping or polishing
摘要
申请公布号
US2450742(A)
申请公布日期
1948.10.05
申请号
US19430509196
申请日期
1943.11.06
申请人
GENERAL MOTORS CORPORATION
发明人
STEVENS CLARENCE C.
分类号
B24B9/16
主分类号
B24B9/16
代理机构
代理人
主权项
地址
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