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发明名称
MOVING MAGNET CONTACT ACOUSTIC TRANSDUCER
摘要
申请公布号
US4010334(A)
申请公布日期
1977.03.01
申请号
US19750544407
申请日期
1975.01.27
申请人
DEMETER, JAMES K.
发明人
DEMETER, JAMES K.
分类号
H04R1/46;H04R11/04;(IPC1-7):H04R1/46
主分类号
H04R1/46
代理机构
代理人
主权项
地址
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