Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4815819 | Method for obtaining images for use in displaying a three-dimensional illusion and related image recording medium | Christopher A. Mayhew | 1989-03-28 |
| 4809336 | Semiconductor amplifier with tube amplifier characteristics | — | 1989-02-28 |