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经营范围
发明名称
Appareil, à lecture directe, pour mesurer le pas des hélices
摘要
申请公布号
FR730260(A)
申请公布日期
1932.08.10
申请号
FRD730260
申请日期
1932.01.21
申请人
发明人
GODFREY BERT OTTO
分类号
G01B5/20
主分类号
G01B5/20
代理机构
代理人
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