Robert A. Willis
4Patents
3h-index
7Co-inventors
47Inventor score
Filing activity: Mar 18, 1977 → Jun 2, 2006
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4094444A | Seed metering device having high friction material on rotating wheel | Human Necessities | 21 | Expired |
| US4135457A | Seed drilling units | Emerging Cross-Sectional Technologies | 9 | Expired |
| USD583482S1 | Building | General | 5 | Expired |
| US4493758A | Anode structure for a plating cell | Electricity | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.