| Number | Name | Date | Kind |
|---|---|---|---|
| D241501 | Doyle et al. | Sep 1976 | |
| D282345 | Fehrs | Jan 1986 | |
| D338818 | Katsuba | Aug 1993 | |
| D348382 | Kaiser | Jul 1994 | |
| D365974 | Matuschek | Jan 1996 | |
| D387260 | Hattori | Dec 1997 | |
| 3499593 | Volkmann | Mar 1970 | |
| 4053093 | Thueringer | Oct 1977 | |
| 5704532 | Wey | Jan 1998 |