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经营范围
发明名称
ELECTROMECHANICAL TRANSDUCER
摘要
申请公布号
EP0226224(A3)
申请公布日期
1988.12.21
申请号
EP19860117758
申请日期
1986.12.19
申请人
AMERICAN TELEPHONE AND TELEGRAPH COMPANY
发明人
ANDERSON, ERNEST W.;BLYLER, LEE LANDIS, JR.;HUTTON, RICHARD SIPP;JOHNSON, GEORGE EDWARD;WANG, TSUEY TANG;ZIPFEL, GEORGE GUSTAVE, JR.
分类号
H04R1/44;G01S7/521;G01V1/20;H04R17/00;(IPC1-7):H04R17/00
主分类号
H04R1/44
代理机构
代理人
主权项
地址
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