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发明名称
Perfectionnements relatifs à un dispositif équilibreur
摘要
申请公布号
FR757890(A)
申请公布日期
1934.01.05
申请号
FRD757890
申请日期
1933.07.03
申请人
发明人
CARWARDINE GEORGE
分类号
F21V21/26
主分类号
F21V21/26
代理机构
代理人
主权项
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