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经营范围
发明名称
Grinding machine
摘要
申请公布号
US1803807(A)
申请公布日期
1931.05.05
申请号
US19200422412
申请日期
1920.11.08
申请人
NORTON COMPANY
发明人
NORTON CHARLES H.
分类号
B24B47/04
主分类号
B24B47/04
代理机构
代理人
主权项
地址
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