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经营范围
发明名称
Mechanical apparatus for displaying electrical phenomena or the like
摘要
申请公布号
US2841110(A)
申请公布日期
1958.07.01
申请号
US19560627495
申请日期
1956.12.10
申请人
HOFFMAN ELECTRONICS CORPORATION
发明人
JAHNS EDWARD R.
分类号
G09B23/18
主分类号
G09B23/18
代理机构
代理人
主权项
地址
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