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发明名称
Indicateur de niveau d'eau, notamment pour chaudières à vapeur
摘要
申请公布号
FR760951(A)
申请公布日期
1934.03.07
申请号
FRD760951
申请日期
1933.09.18
申请人
发明人
VERMOHLEN MARTIN
分类号
G01F23/02
主分类号
G01F23/02
代理机构
代理人
主权项
地址
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