发明名称 Acoustic diaphragm
摘要 An acoustic diaphragm formed of beryllium or an alloy composed mainly of beryllium. Said diaphragm has a crystal structure having its plane (11 &upbar& 20) preferentially orientated in parallel with the surface of the diaphragm.
申请公布号 US4518443(A) 申请公布日期 1985.05.21
申请号 US19830496534 申请日期 1983.05.20
申请人 PIONEER ELECTRONIC CORPORATION 发明人 YOKOZEKI, SHINICHI;KIMURA, MASAMI;TSUKAGOSHI, TSUNEHIRO
分类号 C22C25/00;C23C14/00;H04R7/02;H04R31/00;(IPC1-7):G10K13/00 主分类号 C22C25/00
代理机构 代理人
主权项
地址