Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5234038 | Pour spout | Robert K. Mitchell, John H. Thiermann, Paul R. Ruppel | 1993-08-10 |
| 5088273 | Lawnmower handle assembly | Robert K. Mitchell, Casimir F. Laska | 1992-02-18 |
| 4453507 | Centrifugally responsive compression release mechanism | Jack R. Bargenquast | 1984-06-12 |