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发明名称
Perfectionnements aux machines à essayer les métaux à la dureté
摘要
申请公布号
FR771662(A)
申请公布日期
1934.10.13
申请号
FRD771662
申请日期
1933.07.11
申请人
发明人
GUILLERY RENE, GEORGES
分类号
G01N3/44
主分类号
G01N3/44
代理机构
代理人
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