| Number | Date | Country | Kind |
|---|---|---|---|
| 200101019 | May 2001 | ES |
| Number | Name | Date | Kind |
|---|---|---|---|
| 2671575 | Hilton | Mar 1954 | A |
| 2954145 | McCauley | Sep 1960 | A |
| 3439717 | Bode | Apr 1969 | A |
| 3648904 | Teige | Mar 1972 | A |
| 4245680 | Greenfield et al. | Jan 1981 | A |
| 4324494 | Pryor et al. | Apr 1982 | A |
| 4444336 | Nielsen | Apr 1984 | A |
| 4911332 | King | Mar 1990 | A |
| 5330078 | Ficken et al. | Jul 1994 | A |
| Entry |
|---|
| Japanese Abstract, No. JP10340385, Moribe Tomohisa, Hoshizaki Electric Co. Ltd., Canister, Mar. 31, 1999. |