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经营范围
发明名称
PLANAR ELECTROMAGNETIC TRANSDUCER
摘要
申请公布号
EP0707782(B1)
申请公布日期
1998.09.16
申请号
EP19930910886
申请日期
1993.04.29
申请人
CHAIN REACTIONS, INC.
发明人
STEVENSON, CHARLES, C., G.;PORRAZZO, EDWARD, M.
分类号
H04R7/10;H04R7/06;(IPC1-7):H04R25/00;H04R3/00
主分类号
H04R7/10
代理机构
代理人
主权项
地址
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