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发明名称
Grinding
摘要
申请公布号
US2187471(A)
申请公布日期
1940.01.16
申请号
US19370172573
申请日期
1937.11.03
申请人
GENERAL MOTORS CORPORATION
发明人
HUTCHINSON PHILIP H.
分类号
B24B5/00
主分类号
B24B5/00
代理机构
代理人
主权项
地址
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