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发明名称
摘要
申请公布号
JPS582520(B2)
申请公布日期
1983.01.17
申请号
JP19730102583
申请日期
1973.09.11
申请人
NAT RES DEV
发明人
JUAN EICHI KUUPAA
分类号
H04H20/89;H04R5/04;H04S3/00;H04S3/02
主分类号
H04H20/89
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