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发明名称
Appareil pour faciliter l'observation dans les instruments astronomiques
摘要
申请公布号
FR993016(A)
申请公布日期
1951.10.25
申请号
FRD993016
申请日期
1944.11.07
申请人
SOCIETE MESSIER
发明人
分类号
E04B7/16;G02B23/16
主分类号
E04B7/16
代理机构
代理人
主权项
地址
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