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经营范围
发明名称
Carnet-guide
摘要
申请公布号
FR987525(A)
申请公布日期
1951.08.14
申请号
FRD987525
申请日期
1949.04.01
申请人
发明人
ROUBE MARCEL-LEON
分类号
G09B29/00
主分类号
G09B29/00
代理机构
代理人
主权项
地址
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PROTECTIVE DEVICE OF SEALED HYDROGEN GAS
DIAGNOSIS VERIFICATION DEVICE
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DIGITAL ANALOGUE CONVERTER
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