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| D379627 | Takahashi | Jun 1997 | S |
| D421607 | Hakoda | Mar 2000 | S |
| D446188 | Gershfeld | Aug 2001 | S |
| D480383 | Bolton et al. | Oct 2003 | S |
| D491165 | Hakoda | Jun 2004 | S |
| D491166 | Hakoda | Jun 2004 | S |
| D503396 | Hisatsune | Mar 2005 | S |
| D508041 | Carbone et al. | Aug 2005 | S |
| D511339 | Tsuge | Nov 2005 | S |
| Number | Date | Country |
|---|---|---|
| 1229121 | Jan 2005 | JP |