| Number | Name | Date | Kind |
|---|---|---|---|
| D223144 | Bloch | Mar 1972 | |
| D235498 | Day | Jun 1975 | |
| D235499 | Day | Jun 1975 | |
| D349456 | Wilson | Aug 1994 | |
| D352203 | Campbell et al. | Nov 1994 | |
| 2738915 | Clair | Mar 1956 | |
| 3401863 | Earl | Sep 1968 | |
| 4456164 | Foster et al. | Jun 1984 | |
| 5236119 | Chu | Aug 1993 | |
| 5335787 | Finchum et al. | Aug 1994 |
| Number | Date | Country |
|---|---|---|
| 790950 | Jul 1968 | CAX |
| 3110847 | Sep 1982 | DEX |
| 2044226 | Oct 1980 | GBX |
| Entry |
|---|
| Packaging, Feb. 1988, p. 78. |
| Rubbermaid, Jun. 1985. |