Number | Name | Date | Kind |
---|---|---|---|
3396293 | Harris | Aug 1968 | |
3571626 | Reif | Mar 1971 | |
3800169 | Diaz | Mar 1974 |
Entry |
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IBM Tech. Disc. Bull., Vol. 14, No. 6; Nov. 1971; pp. 1838, 1839, "Phase-Lock Loop with Constant Duty Cycle", by F. W. Niccore. |
Electronics & Power, Jan. 1972, vol. 18; p. 12. |