| Number | Date | Country | Kind |
|---|---|---|---|
| 2075574 | Jun 1998 | GBX |
| Number | Name | Date | Kind |
|---|---|---|---|
| D177945 | Seaver | Jun 1956 | |
| D199450 | McDonald | Oct 1964 | |
| D387122 | Horstmann et al. | Dec 1997 | |
| 2602244 | Schafer, Jr. | Jul 1952 | |
| 3436841 | Whitmore et al. | Apr 1969 | |
| 4303236 | Czarnecki | Dec 1981 | |
| 4527980 | Miller | Jul 1985 | |
| 5388991 | Morris | Feb 1995 |