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发明名称
Electronic sirens
摘要
申请公布号
US3137846(A)
申请公布日期
1964.06.16
申请号
US19580779493
申请日期
1958.12.10
申请人
KENNETH TOWER
发明人
KEELING HAROLD G.
分类号
B06B1/02;H03B23/00
主分类号
B06B1/02
代理机构
代理人
主权项
地址
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