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发明名称
Dispositif optique de contact
摘要
申请公布号
FR935645(A)
申请公布日期
1948.06.24
申请号
FRD935645
申请日期
1946.11.07
申请人
发明人
FRITZ RAOUL;FRITZ ADRIEN
分类号
G02C7/04
主分类号
G02C7/04
代理机构
代理人
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