Ralph Ferguson
3Patents
3h-index
6Co-inventors
43Inventor score
Filing activity: Aug 12, 1986 → May 12, 2004
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7014355B2 | Electronic parking meter system | Physics | 81 | Expired |
| US7274302B2 | Light emitting diode traffic control device | Physics | 17 | Expired |
| US4723868A | Apparatus for installing circular traffic loops | Fixed Constructions | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.