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发明名称
Dispositif amplificateur pour les faibles variations de pression des gaz et ses applications
摘要
申请公布号
FR856404(A)
申请公布日期
1940.06.13
申请号
FRD856404
申请日期
1939.06.16
申请人
发明人
ROLAND MACHAT
分类号
G01L13/02
主分类号
G01L13/02
代理机构
代理人
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