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经营范围
发明名称
RADIO TALKING SYSTEM FOR SIMULTANEOUSLY LOUDSPEAKING
摘要
申请公布号
JPS5440013(A)
申请公布日期
1979.03.28
申请号
JP19770107054
申请日期
1977.09.06
申请人
HIRATA TAKAYOSHI
发明人
HIRATA TAKAYOSHI
分类号
H04B1/56;H04B1/00;H04B7/00;H04B14/00
主分类号
H04B1/56
代理机构
代理人
主权项
地址
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