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发明名称
Supervised signaling system
摘要
申请公布号
US2695994(A)
申请公布日期
1954.11.30
申请号
US19520295459
申请日期
1952.06.25
申请人
GENERAL SONICS CORPORATION
发明人
LODE TENNY
分类号
G08B17/06;G08B23/00
主分类号
G08B17/06
代理机构
代理人
主权项
地址
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