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| US7518327 | 8 Jan 2008 | 14 Apr 2009 | Nartron Corporation | Vehicle panel control system |
| US7763819 | 21 Jun 2005 | 27 Jul 2010 | Aisin Seiki Kabushiki Kaisha | Switch device |
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| USRE30923 | 13 Nov 1979 | 4 May 1982 | Bowmar Instrument Corporation | Calculator keyboard switch with disc spring contact and printed circuit board |
