Frank Marshall
6Patents
6h-index
4Co-inventors
56Inventor score
Filing activity: Jul 28, 1986 → Mar 15, 2011
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4743015A | Exercise device simulating cross country skiing | Human Necessities | 65 | Expired |
| US7107746B2 | Mower suspension system and method | Emerging Cross-Sectional Technologies | 37 | Expired |
| US4768775A | Combination rowing machine and chest exerciser | Emerging Cross-Sectional Technologies | 34 | Expired |
| US7374187B2 | Mower suspension system and method | Emerging Cross-Sectional Technologies | 25 | Active |
| US8397367B2 | Mower suspension system and method | Emerging Cross-Sectional Technologies | 25 | Active |
| US7930813B2 | Mower suspension system and method | Emerging Cross-Sectional Technologies | 23 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.