Number | Date | Country | Kind |
---|---|---|---|
002352021-0001 | Nov 2013 | EM | regional |
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4975173 | Tansamrit et al. | Dec 1990 | A |
5518604 | Perlman | May 1996 | A |
6162342 | Perez et al. | Dec 2000 | A |
6733648 | Okano et al. | May 2004 | B2 |