Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869050 | Vacuum packaging apparatus | — | 1989-09-26 |
| 4860773 | Perforating apparatus for rod-shaped objects | Yutaka Okumoto | 1989-08-29 |
| 4843796 | Method and apparatus for vacuum packaging | — | 1989-07-04 |