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发明名称
Frein d'écrou
摘要
申请公布号
FR709209(A)
申请公布日期
1931.08.04
申请号
FRD709209
申请日期
1930.04.12
申请人
发明人
BOZEC LEON LE
分类号
F16B39/32
主分类号
F16B39/32
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代理人
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