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| 4165088 | Nelson | Aug 1979 | A |
| 4796909 | Kirkendall | Jan 1989 | A |
| 4934720 | Dobron | Jun 1990 | A |
| 5115893 | Terkildsen | May 1992 | A |
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| 5399009 | Hiner | Mar 1995 | A |
| 5424283 | Miano et al. | Jun 1995 | A |
| 5445266 | Prete et al. | Aug 1995 | A |
| 5452951 | Peller | Sep 1995 | A |
| 5484124 | Billings | Jan 1996 | A |
| 5524754 | Hollingsworth | Jun 1996 | A |
| 5557683 | Eubanks | Sep 1996 | A |
| 5607054 | Hollingsworth | Mar 1997 | A |
| 5666265 | Lutz et al. | Sep 1997 | A |
| 5879014 | Price | Mar 1999 | A |
| 5887723 | Myles et al. | Mar 1999 | A |
| 5887777 | Myles et al. | Mar 1999 | A |
| 6059384 | Ho | May 2000 | A |
| 6382643 | Baker | May 2002 | B1 |
| 6439585 | Tan | Aug 2002 | B1 |
| 6485037 | Sulcer, Jr. | Nov 2002 | B1 |
| 20020153682 | Gruber | Oct 2002 | A1 |
| Number | Date | Country |
|---|---|---|
| 2224701 | May 1990 | GB |
| Entry |
|---|
| The Case Street Journal, Jul. 2000,, vol. 1, Issue 1, (website skbcases.com). |