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经营范围
发明名称
Improvements in or relating to mercury vapour lamps
摘要
申请公布号
GB332744(A)
申请公布日期
1930.07.31
申请号
GB19290022454
申请日期
1929.07.22
申请人
DEUTSCH ENGLISCHE QUARZSCHMELZE G.M.B.H.
发明人
分类号
H01J13/02
主分类号
H01J13/02
代理机构
代理人
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地址
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