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经营范围
发明名称
MEGAPHONE AND PRODUCTION THEREOF
摘要
申请公布号
JPH04184395(A)
申请公布日期
1992.07.01
申请号
JP19900317068
申请日期
1990.11.19
申请人
SANWA KASEI KK
发明人
MASAMITSU YASUHIRO;SAITO KUMIO
分类号
G10K11/08
主分类号
G10K11/08
代理机构
代理人
主权项
地址
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