David N. Nappier
4Patents
2h-index
5Co-inventors
33Inventor score
Filing activity: Nov 20, 2003 → Apr 16, 2008
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7363721B2 | Countersink gauge having self-centering probe | Physics | 5 | Expired |
| US7189033B2 | Apparatus and methods for thrust sensing valves | Emerging Cross-Sectional Technologies | 2 | Expired |
| US7614832B2 | Countersink drill system | Emerging Cross-Sectional Technologies | 2 | Active |
| US7789167B2 | Power assist lever arm attachment | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.