Ronald D. Vance
6Patents
6h-index
5Co-inventors
56Inventor score
Filing activity: Dec 24, 1980 → Oct 2, 2000
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5432966A | Adjustable ambulance cot with trolley mechanism | Human Necessities | 55 | Expired |
| US6381781B1 | Combination ambulance cot and chair | Human Necessities | 42 | Expired |
| US5839136A | Cot mountable arm rest and cot incorporating same | Human Necessities | 38 | Expired |
| US4369985A | One man cart for articles | Performing Operations; Transporting | 25 | Expired |
| US6681424B1 | Tilt-top mortuary cot | Human Necessities | 22 | Expired |
| US4688279A | Combination stretcher and stairchair | Human Necessities | 15 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.