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经营范围
发明名称
Polishing machine
摘要
申请公布号
US2170792(A)
申请公布日期
1939.08.29
申请号
US19380191190
申请日期
1938.02.18
申请人
GENERAL MOTORS CORPORATION
发明人
BROOKE ARTHUR O.
分类号
B24B21/00
主分类号
B24B21/00
代理机构
代理人
主权项
地址
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