| Number | Name | Date | Kind |
|---|---|---|---|
| D168364 | Martin | Dec 1952 | |
| D168714 | Schlichtmann | Jan 1953 | |
| D169857 | Klint | Jun 1953 | |
| D285672 | Igarashi et al. | Sep 1986 |
| Entry |
|---|
| Tread Design Guide 1993, p. 139, see Firestone Rock Grip Excavator. |
| Tread Design Guide 1994, p. 166, see Firestone Rock Grip Road Builder. |