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经营范围
发明名称
SOUND ALARM DEVICE
摘要
申请公布号
JPS57172496(A)
申请公布日期
1982.10.23
申请号
JP19810057112
申请日期
1981.04.17
申请人
HITACHI SEISAKUSHO KK
发明人
NAGAOKA YUKIO;KISHI SHIYOUICHI
分类号
G08B23/00;G08B3/10;G08B5/00;G08B25/00
主分类号
G08B23/00
代理机构
代理人
主权项
地址
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