IP Library › Granted Patent US 6,639,986
Granted Patent Utility
US 6,639,986 · App. 09/334,493

Built-in microphone device

Inventors: Takeo Kanamori, Takashi Kawamura, Satoru Ibaraki
Patented Case View Patent ↗
Granted: Oct 28, 2003 Filed: Jun 16, 1999
Inventors
Takeo Kanamori
Takashi Kawamura
Satoru Ibaraki
Assignee (at issue)
SUMITOMO ELECTRIC INDUSTRIES, LTD.

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Quick Facts
Patent No.
US 6,639,986
App. No.
09/334,493
Filed
1999-06-16
Granted
2003-10-28
Kind
B2