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发明名称
Perfectionnements aux appareils enregistreurs ou indicateurs se rapportant à diverses mesures
摘要
申请公布号
FR685577(A)
申请公布日期
1930.07.11
申请号
FRD685577
申请日期
1929.11.07
申请人
THE P. H. & F. M. ROOTS CO
发明人
分类号
G01F15/06;G01F15/07
主分类号
G01F15/06
代理机构
代理人
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地址
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