Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D302975 | Free standing tape drive cabinet | Edward J. Cesarczyk | 1989-08-22 |
| 4807509 | Electroluminescent fret grid for stringed instruments | — | 1989-02-28 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D302975 | Free standing tape drive cabinet | Edward J. Cesarczyk | 1989-08-22 |
| 4807509 | Electroluminescent fret grid for stringed instruments | — | 1989-02-28 |