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发明名称
Graduation électronique à échelle variable
摘要
申请公布号
FR975440(A)
申请公布日期
1951.03.05
申请号
FRD975440
申请日期
1948.11.25
申请人
COMPAGNIE FRANCAISE THOMSON-HOUSTON
发明人
分类号
G01R13/30
主分类号
G01R13/30
代理机构
代理人
主权项
地址
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