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经营范围
发明名称
ENGINE SYSTEM
摘要
PURPOSE:To improve characteristics of a flat-type speaker including a squareshaped diaphragm, to a remarkable extent, by establishing a special relationship between the size of said diaphragm and diameter of diaphragm driving voice coil.
申请公布号
AU3115577(A)
申请公布日期
1978.08.03
申请号
AU19770031155
申请日期
1977.12.02
申请人
NISSAN MOTOR CO. LTD.
发明人
YASUO NAKAJIMA;MICHIO ONODA;KUNIHIKO SUGIHARA;SHINICHI NAGUMO
分类号
H04R9/04;H04R7/04;H04R9/06
主分类号
H04R9/04
代理机构
代理人
主权项
地址
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