Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886383 | Tape cassette for metering correction tape feed | — | 1989-12-12 |
| 4808017 | Pivotable character display for a typewriter | Howard F. Sherman, James H. Greggains, Robert L. Kasprzycki | 1989-02-28 |