| Number | Name | Date | Kind |
|---|---|---|---|
| 367449 | Scott | Aug 1887 | A |
| 700637 | Frey, Jr. | May 1902 | A |
| 766435 | Fitzgerald | Aug 1904 | A |
| 1052141 | Gaschke | Feb 1913 | A |
| 2316225 | Hoffman et al. | Apr 1943 | A |
| 2775878 | Eichhorn | Jan 1957 | A |
| 3133331 | Marticorena | May 1964 | A |
| 3933011 | DiGilio et al. | Jan 1976 | A |
| 4374470 | Isaacson | Feb 1983 | A |
| 4393667 | Reinstein et al. | Jul 1983 | A |
| 4742696 | Jenkins | May 1988 | A |
| 4794766 | Schunk et al. | Jan 1989 | A |
| 4905482 | Gheblikian | Mar 1990 | A |
| 5077989 | Dillabaugh | Jan 1992 | A |
| 5133195 | Appelbaum et al. | Jul 1992 | A |
| 5228317 | Hendricks | Jul 1993 | A |
| 5357770 | Lanyi | Oct 1994 | A |
| 5375434 | Wertheimer et al. | Dec 1994 | A |
| 5456095 | Tawil et al. | Oct 1995 | A |
| 5491986 | White | Feb 1996 | A |
| 5588310 | Lai | Dec 1996 | A |
| 5727399 | Bergagnini | Mar 1998 | A |
| 5806345 | Bonchek | Sep 1998 | A |
| 5865042 | Cerqua | Feb 1999 | A |
| 5996374 | Bardisbanyan | Dec 1999 | A |
| 6116054 | Czupor | Sep 2000 | A |
| 6131408 | Gill | Oct 2000 | A |
| 6192708 | Mitchell | Feb 2001 | B1 |
| Entry |
|---|
| Seidengang Designs Flip-Ring. See: http://www.seidengangdesigns.com, and go to the product catalog for rings in the classic collection. |