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发明名称
INSTRUMENT FOR OBSERVING JEWELS' BRILLIANCE AS DIAMOND, AND METHOD OF TAKING PHOTOGRAPHS WITH SAID INSTRUMENT
摘要
申请公布号
CA2027560(A1)
申请公布日期
1990.08.18
申请号
CA19902027560
申请日期
1990.02.16
申请人
YAMASHITA, KINSAKU;YAMASHITA, MASHAYO
发明人
YAMASHITA, KINSAKU
分类号
G01N21/87;G02B27/00
主分类号
G01N21/87
代理机构
代理人
主权项
地址
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