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发明名称
Perfectionnements apportés aux compteurs à gaz d'éclairage
摘要
申请公布号
FR689903(A)
申请公布日期
1930.09.12
申请号
FRD689903
申请日期
1929.04.22
申请人
发明人
LAUTE ANDRE-OCTAVE
分类号
G01F3/30
主分类号
G01F3/30
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代理人
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