| Number | Date | Country | Kind |
|---|---|---|---|
| 21556/87[U] | May 1987 | ITX |
| Number | Name | Date | Kind |
|---|---|---|---|
| D87724 | Michelson | Sep 1932 |
| Entry |
|---|
| 1985 Tread Design Guide, p. 52, Ohtsu Hi-Steel Joyl Tire, top left side of page. |
| 1987 Tread Design Guide, p. 46, Kleber C-2 & C-4 Tire, top right side of page. |