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发明名称
Photomètre perfectionné à cellule photo-électrique
摘要
申请公布号
FR817674(A)
申请公布日期
1937.09.08
申请号
FRD817674
申请日期
1936.05.16
申请人
CHAUVIN, ARNOUX & COMPAGNIE
发明人
分类号
G01J1/42
主分类号
G01J1/42
代理机构
代理人
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地址
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