Number | Name | Date | Kind |
---|---|---|---|
2706271 | Fletcher | Apr 1955 | |
3739257 | Hunter | Jun 1973 | |
3824449 | Hase | Jul 1974 | |
3904954 | Knudson | Sep 1975 |
Number | Date | Country |
---|---|---|
209,418 | Jun 1960 | DL |
Entry |
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(SZ6540008) IEEE Transactions on Magnetics, Sept. 1971, pp. 564-567. |
"Closed-Loop Controlled Ferroresonant Regulator" by Higuchi et al., IBM Tech. Disc. Bull., vol. 17, No. 9, Feb. 1975, pp. 2736, 2737. |