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经营范围
发明名称
Grinding and polishing apparatus
摘要
申请公布号
US1979325(A)
申请公布日期
1934.11.06
申请号
US19310566201
申请日期
1931.10.01
申请人
HERMAN GOLDBERG
发明人
GOLDBERG HERMAN
分类号
B24B41/04
主分类号
B24B41/04
代理机构
代理人
主权项
地址
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