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发明名称
Niveau-mètre
摘要
申请公布号
FR705224(A)
申请公布日期
1931.06.02
申请号
FRD705224
申请日期
1930.11.07
申请人
发明人
PERONA ERNEST
分类号
G01C9/04
主分类号
G01C9/04
代理机构
代理人
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