Title:
電気音響変換器用振動板の製造方法および振動板
Document Type and Number:
Japanese Patent JP4999899
Kind Code:
B2
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Inventors:
Yuji Shinagawa
Application Number:
JP2009203218A
Publication Date:
August 15, 2012
Filing Date:
September 03, 2009
Export Citation:
Assignee:
Foster Electric Co., Ltd.
International Classes:
H04R31/00; H04R7/14; H04R7/20
Domestic Patent References:
| JP2008085842A |
Attorney, Agent or Firm:
Michio Takayama