David C. Johanson
1Patents
1h-index
3Co-inventors
25Inventor score
Filing activity: Apr 27, 1981 → Apr 27, 1981
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4421393A | Visual field perimeter and psychomotor tracking performance measuring apparatus | Human Necessities | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.