| 8019479 |
Control algorithm of variable speed pumping system |
Robert W. Stiles, Jr., Lars Hoffmann Berthelsen, Christopher R. Yahnker, Everett Cox, Donald Steen +10 more |
2011-09-13 |
| 7854597 |
Pumping system with two way communication |
Robert W. Stiles, Jr., Lars Hoffmann Berthelsen, Christopher R. Yahnker, Daniel J. Hruby, Kevin Murphy +6 more |
2010-12-21 |
| 7686589 |
Pumping system with power optimization |
Robert W. Stiles, Jr., Lars Hoffmann Berthelsen, Christopher R. Yahnker, Einar Kjartan Runarsson |
2010-03-30 |
| D606562 |
Water pump |
Robert W. Stiles, Jr., Lars Hoffmann Berthelsen, Christopher R. Yahnker, John Gary Bullock, Gert Kjaer +1 more |
2009-12-22 |
| D568340 |
Water pump |
Robert W. Stiles, Jr., Lars Hoffmann Berthelsen, Christopher R. Yahnker, John Gary Bulluck, Gert Kjaer +1 more |
2008-05-06 |
| 5878773 |
Auxiliary flow path valve |
— |
1999-03-09 |
| 5574334 |
Submerged lamp with self grounding sleeve |
— |
1996-11-12 |
| 5268096 |
Pool drain assembly |
— |
1993-12-07 |
| 4705629 |
Modular operations center for in-ground swimming pool |
Donald H. Weir, Stanley H. Frederick, Robert A. Hotaling |
1987-11-10 |
| 4661247 |
Modular operations center for in-ground swimming pool |
Donald H. Weir, Stanley H. Frederick, Robert A. Hotaling |
1987-04-28 |