|
| US4311977 | 29 May 1980 | 19 Ene 1982 | Continental Electronics Mfg. Co. | Output transformer |
| US4403205 | 8 Jun 1981 | 6 Sep 1983 | General Electric Company | Circuit arrangement for controlling transformer current |
| US4635019 | 14 Ago 1985 | 6 Ene 1987 | TDK Corporation | Coil apparatus with divided windings |
| US6049266 | 8 Abr 1999 | 11 Abr 2000 | Takaoka Electric Mfg. Co., Ltd. | Single-phase three-wire type transformer |
| US6617949 | 5 Sep 2002 | 9 Sep 2003 | FDK Corporation | Choke coil |
