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发明名称
Perfectionnements aux lampes électriques portatives à hauteur et direction de feu réglables
摘要
申请公布号
FR866273(A)
申请公布日期
1941.07.21
申请号
FRD866273
申请日期
1940.03.16
申请人
发明人
JEAN CHAVANIS
分类号
F21V21/26
主分类号
F21V21/26
代理机构
代理人
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