Frederick Wall
4Patents
4h-index
2Co-inventors
44Inventor score
Filing activity: Nov 13, 1975 → Dec 19, 1996
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4033871A | Integrated monitor and control system for continuously monitoring and controlling pH and free halogen in swimming pool water | Emerging Cross-Sectional Technologies | 58 | Expired |
| US4127485A | Vacuum filter for swimming pools | Performing Operations; Transporting | 27 | Expired |
| US4115877A | Liquid level sensing device and swimming pool water circulation systems containing the same | Fixed Constructions | 11 | Expired |
| US5826382A | Elongated member of extruded plastic suitable for flooring, decking, seating, and like uses | Fixed Constructions | 10 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.