Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5357785 | Method and device for determining rhenological properties | Raymond T. Hemmings | 1994-10-25 |
| 5321974 | Method and device for determining rheological properties | Raymond T. Hemmings, Hillar Kassfeldt | 1994-06-21 |
| 4917216 | Segmented ladder construction | — | 1990-04-17 |
| 4457041 | Retaining systems for squeegee assemblies in windshield | Peter C. Norris | 1984-07-03 |
| 4389746 | Connector for windshield wipers of low silhouette type | — | 1983-06-28 |
| 4388742 | Retainer clip and retainer clip backing member combination for windshield wiper blade assemblies | Peter C. Norris | 1983-06-21 |