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发明名称
Nut device for electric lamp holders and other screw-threaded articles
摘要
申请公布号
GB478782(A)
申请公布日期
1938.01.25
申请号
GB19370007943
申请日期
1937.03.18
申请人
JAMES MCLEAN
发明人
分类号
F21V17/06
主分类号
F21V17/06
代理机构
代理人
主权项
地址
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