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发明名称
Niveau à bulle d'air
摘要
申请公布号
FR1136293(A)
申请公布日期
1957.05.10
申请号
FRD1136293
申请日期
1955.06.15
申请人
发明人
SCHOPFER OTTO
分类号
G01C9/24;G01C9/28
主分类号
G01C9/24
代理机构
代理人
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