| Number | Name | Date | Kind |
|---|---|---|---|
| 4587593 | Liautaud et al. | May 1986 | |
| 4872102 | Getter | Oct 1989 | |
| 5032952 | Cooke et al. | Jul 1991 |
| Entry |
|---|
| Power supplies on p. 90 of Electronic Design, Jan. 1993. |
| Power supplies on p. 52 of Electronic Design, Feb. 4, 1993. |
| Inverters on p. 290 of Boat/U.S., 1991 catalog. |