Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870320 | Color picture tube having an electron gun with reduced convergence drift | Bruce G. Marks, Loren L. Maninger | 1989-09-26 |
| 4834021 | Apparatus for controlling the distribution of evaporated material onto a surface | Walter E. Root, II | 1989-05-30 |