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发明名称
Electric lamp
摘要
申请公布号
US1853514(A)
申请公布日期
1932.04.12
申请号
US19290403613
申请日期
1929.10.30
申请人
DOUGLAS HARRY A
发明人
DOUGLAS HARRY A.
分类号
F21V19/00
主分类号
F21V19/00
代理机构
代理人
主权项
地址
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