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发明名称
WORKING GEMSTONES
摘要
申请公布号
GB9010176(D0)
申请公布日期
1990.06.27
申请号
GB19900010176
申请日期
1990.05.04
申请人
BRILCUT PATENTANSTALT
发明人
分类号
B24B1/00;B28D5/00
主分类号
B24B1/00
代理机构
代理人
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