Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886697 | Thermoplastic material containing absorbent pad or other article | Lee E. Perdelwitz, Jr, Ron H. Iff, David E. Hanke, Kathleen S. Allison, Raimo K. Rahkonen +1 more | 1989-12-12 |
| 4828890 | Method for increasing bleed resistance of preserved plants and products of the method | George T. Tiedeman, David W. Park | 1989-05-09 |