发明名称 |
Lighting system control |
摘要 |
|
申请公布号 |
US2021677(A) |
申请公布日期 |
1935.11.19 |
申请号 |
US19330671932 |
申请日期 |
1933.05.19 |
申请人 |
FRANK O. WAHLSTROM |
发明人 |
BARRETT URSHEL W. |
分类号 |
B60Q11/00 |
主分类号 |
B60Q11/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|
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