Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6164560 | Lawn applicator module and control system therefor | Kenneth E. Lehrke, Frederick A. Powers, Gary D. Ingle | 2000-12-26 |
| 6089532 | Valve for use with agricultural sprayers | Terry Rohloff, Frederick A. Powers | 2000-07-18 |
| 6019124 | Valve assembly for use with high pressure pumps | Frederick A. Powers | 2000-02-01 |
| 5667143 | Spray gun for spraying two fluids | Frederick A. Powers, Calvin Pasvogel | 1997-09-16 |