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发明名称
Nouvelle disposition de niveau à bulle d'air
摘要
申请公布号
FR708622(A)
申请公布日期
1931.07.27
申请号
FRD708622
申请日期
1930.12.31
申请人
发明人
SCHNEIDER HEINRICH
分类号
G01C9/28
主分类号
G01C9/28
代理机构
代理人
主权项
地址
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