发明名称 Microphone screen
摘要 An improved microphone structure having a ball screen enclosing the transducer. The microphone body or handle has an annular shoulder at its upper end to provide an upstanding externally threaded projection. The lower part of the ball screen has an opening to receive the upstanding handle projection, the peripheral portion of the screen at the opening being turned inwardly and adapted to be secured to an internally threaded base ring. The base ring is threaded on the handle projection to secure the ball screen in place.
申请公布号 US4065648(A) 申请公布日期 1977.12.27
申请号 US19760731293 申请日期 1976.10.12
申请人 THE ASTATIC CORPORATION 发明人 CVETKO, HENRY J.;PETERSON, DONALD W.
分类号 H04R1/08;(IPC1-7):H04R1/00 主分类号 H04R1/08
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