发明名称 |
Signaling system |
摘要 |
|
申请公布号 |
US1772671(A) |
申请公布日期 |
1930.08.12 |
申请号 |
US19280281721 |
申请日期 |
1928.05.31 |
申请人 |
RESERVE HOLDING COMPANY |
发明人 |
LOMAX CLARENCE E. |
分类号 |
G08B25/00 |
主分类号 |
G08B25/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|
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