Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888657 | Contoured head assembly for use in a cassette loaded recorder | George W. Brock | 1989-12-19 |
| 4875129 | Inline magnetic head assembly for use in a cassette loaded recorder | John M. Favrou, George W. Brock | 1989-10-17 |