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经营范围
发明名称
Apparatus for polishing or forming facets on gems, diamonds, or the like
摘要
申请公布号
US2393939(A)
申请公布日期
1946.01.29
申请号
US19420437056
申请日期
1942.03.31
申请人
HILLEL SPIRA JOSEF
发明人
SPIRA JOSEF HILLEL
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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