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发明名称
摘要
申请公布号
JPS631722(B2)
申请公布日期
1988.01.13
申请号
JP19800081705
申请日期
1980.06.17
申请人
YAMAHA KK
发明人
TAKAHASHI SHUNETSU
分类号
H01C10/14;H01C10/00;H01C10/32;H01F5/04
主分类号
H01C10/14
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