| Number | Name | Date | Kind |
|---|---|---|---|
| D273497 | Steineman | Apr 1984 | |
| D297301 | Aoki et al. | Aug 1988 | |
| 2600362 | Harder | Jun 1952 | |
| 3286975 | Langford | Nov 1986 | |
| 3811645 | Feist | May 1974 | |
| 3995685 | Stanko | Dec 1976 | |
| 4188017 | Dingler | Feb 1980 | |
| 4877388 | Inaba et al. | Oct 1989 |
| Entry |
|---|
| Product Brochure page dated Jul. 5, 1977. |