发明名称 |
Display sign |
摘要 |
|
申请公布号 |
US2588050(A) |
申请公布日期 |
1952.03.04 |
申请号 |
US19480014533 |
申请日期 |
1948.03.12 |
申请人 |
RUTHERFORD STEPHEN W |
发明人 |
RUTHERFORD STEPHEN W. |
分类号 |
G09F3/20 |
主分类号 |
G09F3/20 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|
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