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发明名称
Expansible nut unable to work loose
摘要
申请公布号
US2074779(A)
申请公布日期
1937.03.23
申请号
US19340734036
申请日期
1934.07.06
申请人
DE LAUNAY MAURICE BOURDON
发明人
LAUNAY MAURICE BOURDON DE
分类号
F16B39/10;F16B39/286
主分类号
F16B39/10
代理机构
代理人
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地址
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