Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7090055 | Boat lift brake apparatus | Riku Ylipelkonen | 2006-08-15 |
| 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 |
| 6408776 | Synchronously driven, multiple cable boat lift | Daniel S. Carter, Charles L. Sargent, John Kohlhauff | 2002-06-25 |
| 6230639 | Single motor boat lift having horizontally and longitudinally driven cables | Daniel S. Carter, Charles L. Sargent, John Kohlhauff | 2001-05-15 |
| 6049933 | Bumper assemblies for swimming pool cleaners | — | 2000-04-18 |
| 5720068 | Automatic swimming pool cleaners and associated components | William T. Clark, James Dwight Scott, Graham M. Barton, Chris A. Rice | 1998-02-24 |
| 5570713 | Flow control weir valve | Gerhardus J. Stoltz, Ronald J. Sargent | 1996-11-05 |
| 5546982 | Automatic swimming pool cleaners and associated components | William T. Clark, James Dwight Scott, Graham M. Barton, Chris A. Rice | 1996-08-20 |