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| 4777750 | Garfinkle | Oct 1988 | A |
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| 20080028652 | Makhija et al. | Feb 2008 | A1 |
| 20080178506 | Garfinkle | Jul 2008 | A1 |
| Number | Date | Country |
|---|---|---|
| 2687243 | Aug 1993 | FR |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 09684726 | Oct 2000 | US |
| Child | 10147669 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 11888108 | Jul 2007 | US |
| Child | 29335127 | US | |
| Parent | 10147669 | Jul 2002 | US |
| Child | 11888108 | US |