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经营范围
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
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