Number | Date | Country | Kind |
---|---|---|---|
001151591 | Jul 2009 | EP | regional |
001162309 | Sep 2009 | EP | regional |
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4286412 | Stevens | Sep 1981 | A |
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6421876 | Ginzel et al. | Jul 2002 | B1 |
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Number | Date | Country | |
---|---|---|---|
Parent | 29353527 | Jan 2010 | US |
Child | 29399203 | US |