发明名称 |
Visual signal indicator |
摘要 |
|
申请公布号 |
US2228021(A) |
申请公布日期 |
1941.01.07 |
申请号 |
US19360117403 |
申请日期 |
1936.12.23 |
申请人 |
|
发明人 |
VLECK PEIRCE VAN |
分类号 |
F21S8/00 |
主分类号 |
F21S8/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|
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