Hänvisningar finns i följande patent|
| US4959630 | 7 aug 1989 | 25 sep 1990 | General Electric Company | High-frequency transformer | | US5017902 | 30 maj 1989 | 21 maj 1991 | General Electric Company | Conductive film magnetic components | | US5126715 | 2 jul 1990 | 30 jun 1992 | General Electric Company | Low-profile multi-pole conductive film transformer | | US5291173 | 21 feb 1992 | 1 mar 1994 | General Electric Co. | Z-foldable secondary winding for a low-profile, multi-pole transformer |
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