Jeffrey W. Hamner
4Patents
3h-index
1Co-inventors
40Inventor score
Filing activity: Aug 25, 1989 → Dec 29, 2004
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7347285B2 | Drilling machine having a movable rod handling device and a method for moving the rod handling device | Fixed Constructions | 19 | Expired |
| US5168937A | Drill feed control utilizing a variable overcenter valve | Fixed Constructions | 11 | Expired |
| US4953639A | Closed loop hydraulic drill feed system | Fixed Constructions | 11 | Expired |
| US5033266A | Overcenter valve control system and method for drilling | Fixed Constructions | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.