Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884158 | Magnetic tape cassette having a spring-biased front panel and locking member | Albert Pertzsch, Ludwig Zeroni | 1989-11-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884158 | Magnetic tape cassette having a spring-biased front panel and locking member | Albert Pertzsch, Ludwig Zeroni | 1989-11-28 |