Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5619171 | Phase-locked loop, phase comparator for use in the phase-locked loop, and reproducing device including the phase-locked loop | Johannes J. L. M. Van Vlerken | 1997-04-08 |
| 5606465 | Information track format and reading and recording apparatuses therefor | Hugo Augustinus Joseph Cramer | 1997-02-25 |