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发明名称
STRUCTURE OF SWITCH SECTION IN ELECTRICAL MEGAPHONE
摘要
申请公布号
JPH11155200(A)
申请公布日期
1999.06.08
申请号
JP19970336486
申请日期
1997.11.19
申请人
TOA CORP
发明人
NISHINO TAKASHI
分类号
H04R27/04;H01H13/04;H01H13/06;(IPC1-7):H04R27/04
主分类号
H04R27/04
代理机构
代理人
主权项
地址
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