Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6647704 | Aquatic vegetation shredder having bow and stern mounted high speed, large chopping propellers | David Penny, Gerald S. Harvey | 2003-11-18 |
| 6449931 | Aquatic vegetation shredder having bow and stern mounted high speed, large chopping propellers | David Penny, Gerald S. Harvey | 2002-09-17 |
| 6189303 | Method of destroying aquatic vegetation | David Penny, Gerald S. Harvey | 2001-02-20 |
| 6116004 | Aquatic vegetation shredder | David Penny, Gerald S. Harvey | 2000-09-12 |
| 6023920 | Apparatus for destroying aquatic vegetation | David Penny, Gerald S. Harvey | 2000-02-15 |