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发明名称
Perfectionnements aux relais différentiels
摘要
申请公布号
FR921477(A)
申请公布日期
1947.05.08
申请号
FRD921477
申请日期
1945.11.16
申请人
发明人
FLIGUE VLADIMIR DE
分类号
H02H3/26
主分类号
H02H3/26
代理机构
代理人
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