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发明名称
Audible multitone alarm
摘要
申请公布号
US2904783(A)
申请公布日期
1959.09.15
申请号
US19590800422
申请日期
1959.03.19
申请人
TIBBOTT DAVID W
发明人
TIBBOTT DAVID W.
分类号
G10K1/063
主分类号
G10K1/063
代理机构
代理人
主权项
地址
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