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经营范围
发明名称
Electrical fixture
摘要
申请公布号
US1780847(A)
申请公布日期
1930.11.04
申请号
US19290372183
申请日期
1929.06.19
申请人
SMITH ALFRED A
发明人
SMITH ALFRED A.
分类号
F21V21/02
主分类号
F21V21/02
代理机构
代理人
主权项
地址
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