Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6640736 | Synchronously driven, multiple cable boat lift | Daniel S. Carter, Charles L. Sargent, John Kohlhauff | 2003-11-04 |
| 6543375 | Solar powered boat lift | Charles L. Sargent | 2003-04-08 |