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发明名称
MAGNETIC STETHOSCOPE
摘要
申请公布号
GB1483557(A)
申请公布日期
1977.08.24
申请号
GB19750038359
申请日期
1975.09.18
申请人
STANDARD TELEPHONES & CABLES LTD
发明人
分类号
H04R27/00;(IPC1-7):H04R27/00
主分类号
H04R27/00
代理机构
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