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发明名称
Procédé et dispositif pour la radiographie directe des perles et pierres précieuses
摘要
申请公布号
FR695013(A)
申请公布日期
1930.12.10
申请号
FRD695013
申请日期
1929.08.03
申请人
发明人
RYZIGER FERNAND
分类号
G01N33/38
主分类号
G01N33/38
代理机构
代理人
主权项
地址
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