Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4838651 | Projection tube having an insulating layer of magnesium oxide and a high transmission metal grating | Kurt M. Tischer | 1989-06-13 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4838651 | Projection tube having an insulating layer of magnesium oxide and a high transmission metal grating | Kurt M. Tischer | 1989-06-13 |