Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884004 | Color cathode-ray tube having a heat dissipative, electron reflective coating on a color selection electrode | Donald W. Bartch | 1989-11-28 |
| 4849066 | Method for selectively etching integral cathode substrate and support utilizing increased etchant turbulence | Donald W. Bartch, Wayne R. Poff | 1989-07-18 |