Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4860167 | Electrical switching unit | Walter Trumpler | 1989-08-22 |
| 4829746 | Apparatus for placing a web of film under tension | Dallas L. Woods | 1989-05-16 |
| 4794750 | Method for making containers having ports | David A. Winchell | 1989-01-03 |