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发明名称
GRINDING CONTROL FOR GEM STONES
摘要
申请公布号
GB8700028(D0)
申请公布日期
1987.02.11
申请号
GB19870000028
申请日期
1987.01.02
申请人
LEIBOWITZ, A
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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