Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884655 | Tower-type speaker cabinet with pivoted plural speaker subassembly | John F. Castagna | 1989-12-05 |
| D304586 | Loudspeaker | John F. Castagna | 1989-11-14 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884655 | Tower-type speaker cabinet with pivoted plural speaker subassembly | John F. Castagna | 1989-12-05 |
| D304586 | Loudspeaker | John F. Castagna | 1989-11-14 |