Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885352 | Transparent plastic film comprising low density polyethylene | — | 1989-12-05 |
| 4837849 | Stand-up plastic bag and method of making same | R. Douglas Behr, Roger D. Vrooman | 1989-06-06 |