| Number | Name | Date | Kind |
|---|---|---|---|
| 1880985 | Saunders | Oct 1932 | A |
| 1972920 | Deuse | Sep 1934 | A |
| 4287794 | Kubach et al. | Sep 1981 | A |
| 4560344 | Kietaibl | Dec 1985 | A |
| 4864898 | Tricinella | Sep 1989 | A |
| 5169305 | Kee | Dec 1992 | A |
| D414090 | Wysopal | Sep 1999 | S |
| D421372 | Wysopal | Mar 2000 | S |
| D439816 | Wysopal | Apr 2001 | S |
| Entry |
|---|
| U.S. Provisional patent application Ser. No. 60/289,938, Cohen, filed May 2001. |
| U.S. patent application Ser. No. 09/865,349, Cohen, filed May 2001. |