Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6457560 | Gear box oil pumping system | Arthur Leon Evans, David L. Shafer, Duane R. Summerlot | 2002-10-01 |
| 6370855 | Grass blower for lawn mower | Arthur Leon Evans, David L. Shafer, Duane R. Summerlot | 2002-04-16 |