Frederick C. Campbell
2Patents
2h-index
1Co-inventors
24Inventor score
Filing activity: Dec 20, 1990 → Dec 20, 1990
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5140994A | Surface vibration analysis | Human Necessities | 11 | Expired |
| USH372H | Piezoelectric charging device | General | 10 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.