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发明名称
Perfectionnements apportés aux appareils comportant des leviers par l'emploi de dispositifs permettant de faire varier les rapports des longueurs des bras des leviers
摘要
申请公布号
FR1097278(A)
申请公布日期
1955.07.04
申请号
FRD1097278
申请日期
1954.02.09
申请人
发明人
DUVAL JACQUES-GASTON-GEORG
分类号
G01G1/00
主分类号
G01G1/00
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代理人
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